Merriam-Webster OnLine - A free, searchable on-line dictionary and thesaurus, word games, a word of the day, and many other English language and vocabulary reference tools and resources.
OneLook Dictionaries - Look up a word or term in an Internet dictionary or glossary. Free search access to a frequently updated database of words, terms, names, and acronyms.
AllWords.com - Features two modern English dictionaries, multilingual search, and translation. Also features a guide to language sites on the web and a language discussion forum.
The Alternative Dictionaries - Includes a list of slang terms and phrases in various languages.
Cambridge International Dictionaries - Free online dictionary from Cambridge University Press.
Campus Program: Language Dictionaries - A compilation of a large number of dictionary websites grouped by language.
The Century Dictionary Online - Free 500,000 word dictionary of English with an encyclopedia and world atlas. Uses DjVu and JPEG formats to display page images. Has headword lookup and full text search of 22 million words of underlying text.
Cooldictionary.com - Free edition of a complete Webster dictionary. Fully crosslinked.
DICT Development Group - A WWW interface to several freely available on-line dictionaries, including Webster's 1913, the Jargon File, the US Gazetteer, and Easton's Bible Dictionary.
Dictionaries, Lexica and Lexical Resources - Collection of links to various online dictionaries and other lexical references.
Dictionaries on the Web - Link collection -- over 100 links to various dictionaries of about 40 languages.
Dictionarium - Directory of English and foreign-language dictionaries.
Dictionary Building Software for Reporters - Software program for realtime reporters and captioners that lists many diverse vocabulary lists.
Dictionary Link - A directory of free online language resources such as dictionaries, thesauruses, language translators, and encyclopedias.
Dictionary of Comprehension - A Dictionary of Comprehension in different languages.
Dictionary of Difficult Words - Search or browse this dictionary of more than 13,000 words.
Dictionary Society of North America - An international organization of librarians, booksellers, translators, linguists, publishers, writers, journalists, and collectors. Founded in 1975 to further research in dictionary making, study, collection, and use. Member of the American Council of Learned Societies.
Dictionary.com - Free online dictionary search, translator, word of the day, crossword puzzles and word games, and vocabulary learning resources for many languages.
Dictsearch - Search a variety of dictionaries including monolingual, bilingual, and specialty dictionaries.
eLook Dictionary - Provides definitions, synonyms, and related words.
EZresearch.com - Provides a directory of dictionaries.
Free Dictionary and Free Translation - Collection of free dictionaries and translation sites. Supports searching all dictionaries with just one mouse click.
Glossaries - Collection of more than 2400 links to glossaries and dictionaries.
Glossaries by Language - Directory of multilingual dictionaries and dictionaries on specific subjects, alphabetized by language.
The Glossarist - Searchable directory of glossaries and topical dictionaries containing terms and definitions on hundreds of subjects.
High Definition Dictionary - Mixed collection of drug terminology with an apparently arbitrarily selected mix of other, unrelated terms. Dictionary accepts contributions of new terms.
HyperDictionary.com - Includes a thesaurus and searchable dictionaries for English, computers, dreams and medicine.
Hypertext Webster Gateway - WWW interface to multiple English dictionaries.
Information Please Dictionary - Infoplease's free online dictionary. Features almanacs, an encyclopedia, and an atlas.
Inter Active Terminology for Europe (IATE) - The European Commission's multilingual term bank. Particularly rich in technical and specialized terminology related to European Union policy.
KnowPlay? - Simple and integrated access to dictionaries, thesauri, encylopedias, and quotation databases.
Lexicool - Searchable directory of bilingual and multilingual dictionaries.
Lighting Design Terminology - Explanations of terms used in architectural lighting and lighting simulation.
The Newbury House Online Dictionary - Search over 40,000 entries to get clear concise definitions and when available related pictures.
On-Line Dictionaries - Online specialty dictionaries for English, Russian, German, Finnish and Latin.
The Online Dictionary List - A large directory of online dictionaries, both in English and bilingual, including specialist dictionaries.
Oxford Advanced Learner's Dictionary - Allows users to search, free of charge, for entries in the latest (year 2000) edition of the Oxford Advanced Learner's Dictionary.
Planet Translation - Directory of dictionaries, including unilingual, multilingual, and topical resources.
Quotations: The Yale Dictionary - Project to create an searchable online database and a quotation dictionary from Yale University Press.
Research-It - Includes several dictionaries and a thesaurus as well as online tools for shipping and mailing, currency exchange, and language translation.
Search-It-All - A collection of reference tools.
Skeptic's Dictionary - Skeptical definitions and essays on occult, paranormal, supernatural and pseudoscientific ideas and practices with references to the best skeptical literature.
Strange Dictionaries - Free online versions of the Dictionary of One-Letter Words, the Dictionary of All-Vowel Words, the Dictionary of All-Consonant Words, and other strange dictionary resources.
The Superhero Dictionary - Each entry compares a superhero's name with its real life meaning and includes comparison pictures and pronunciations.
Terminological Information System - A simplified version of the European Union terminological database.
Voycabulary - Online dictionary and thesaurus web linking lookup reference tool.
Web Dictionaries - Multi-search tool by Tinh Van, which consults English-only dictionaries, and Vietnamese into English or French translation dictionaries.
Webster's Online Dictionary: The Rosetta Edition - This database doubled with a metasearch tool extracts records from a variety of online and public-domain paper dictionaries, both general and specialized. It offers English definitions, as well as translations from/to a hundred languages.
Word Assault - Looks up multiple words simultaneously using several databases including Webster's, Easton's, Wordnet, and the Devil's Dictionary.
Word Central - Student dictionary and rhyming dictionary online at Merriam-Webster's website. Daily Buzzword by subscription.
Word Spy - Site dedicated to recently coined words and existing words revived into modern usage.
WordWeb - A free English thesaurus and dictionary for Windows.
yourDictionary.com - Comprehensive index of on-line dictionaries in more than 200 different languages. Includes an index of on-line grammars, word of the day by email, and several pages of linguistic fun.
For Kids and Teens
WordCentral.com [ Kids/Teens ] - Merriam-Webster's site for kids has a student dictionary, Daily Buzzword, and interactive word games. Includes homework help and lesson plans for teachers.
Alcwin.org [ Mature Teens ] - Site listing several types of dictionaries related to the sciences.
The American Heritage Dictionary of the English Language [ Kids/Teens/Mature Teens ] - Contains over 90,000 entries, including 70,000 audio word pronunciations.
ArtLex [ Teens/Mature Teens ] - Dictionary of visual art defines more than 3,500 art-related terms. Also includes a comprehensive collection of artwork and famous quotes.
Biographical Dictionary [ Kids/Teens/Mature Teens ] - Read about more than 28,000 notable men and women from history. Search by names, dates, professions, achievements, and more.
Churchman Dictionary [ Kids/Teens/Mature Teens ] - Lookup a definition in the search bar or by first letter. Includes a "word of the day".
Dictionary.com [ Kids/Teens/Mature Teens ] - Online English dictionary, thesaurus and reference guide. Includes word games, online translator, and word of the day feature.
DinoDictionary.com [ Kids/Teens/Mature Teens ] - Features profiles of over 300 known dinosaurs along with pronunciations of their names.
eLook Dictionary [ Kids/Teens ] - Provides definitions, synonyms, and related words.
Fact Monster [ Teens/Mature Teens ] - An online dictionary with definitions of more than 125,000 words and links to other related student tools.
Free On-line Dictionary of Computing [ Kids/Teens/Mature Teens ] - A searchable dictionary of terms from computing and related fields.
Giraffian Children's Picture Dictionary [ Kids ] - A collection of illustrated words and concepts, aimed at children in preschool or early primary years.
Ice Phoenix Vocab Project [ Teens/Mature Teens ] - Downloadable program that looks up entire lists of vocabulary words.
InfoVisual [ Kids/Teens/Mature Teens ] - Thematic visual dictionary that focuses on learning through images. Concise definitions within the fields of vegetal biology, animal biology, human anatomy, and transportation.
The Internet Picture Dictionary [ Kids/Teens/Mature Teens ] - Free, online multilingual picture dictionary with interactive activities for English, French, German, Spanish, Italian and ESL learners.
Little Explorers [ Kids ] - Picture dictionary gives definitions, pictures, and Internet links for over 2,350 entries. Includes translations for English to and from Dutch, French, Spanish, and more.
MSN Encarta Dictionary [ Kids/Teens/Mature Teens ] - Online dictionary with over 100,000 entries, definitions, and pronunciations.
NetLingo Dictionary [ Teens/Mature Teens ] - Provides a glossary of Internet jargon and acronyms.
OneLook Dictionary Search [ Kids/Teens/Mature Teens ] - Type in a word and search many dictionaries at once. Also has a reverse dictionary and translations.
Online Dictionary [ Teens/Mature Teens ] - Find definitions of words using this online dictionary from AOL's Research and Learn channel.
Pidic.com [ Teens/Mature Teens ] - An online picture dictionary with thousands of images
PSEUDOdictionary [ Teens/Mature Teens ] - Defines everyday words including slang, webspeak, and colloquialisms.
RhymeZone [ Kids/Teens/Mature Teens ] - Online rhyming dictionary. Search for a word and get a list of potential words that rhyme in addition to a definition.
The Skeptic's Dictionary [ Teens/Mature Teens ] - Definitions and essays on occult, paranormal, and supernatural ideas and practices from the point of view of someone who is a sceptic, that is, does not believe in these things.
Tech Terms Computer Dictionary [ Mature Teens ] - A searchable dictionary of computer terms with definitions explained in simple language.
Terminology Collection: Online Dictionaries [ Teens/Mature Teens ] - Glossaries for several languages and for specialized fields from the University of Vaasa, Finland.
WebDictionary.co.uk [ Teens/Mature Teens ] - Online dictionary and reference website.
Webopedia [ Teens/Mature Teens ] - Definitions of many computer-related terms, from hardware to the internet.
wordIQ [ Teens/Mature Teens ] - Search on several different dictionaries, an encyclopedia, and the web.
Wordsmyth [ Kids/Teens/Mature Teens ] - A dictionary and thesaurus in one. Also gives parts of speech and examples for more than 50,000 words.
The American Heritage Dictionary of the English Language - Online publication of the 4th edition. Featuring audio word pronunciations, illustrations.
AskOxford.com - For questions on English grammar, spelling, and usage; to search a dictionary of words, names or quotations; for help with writing; for crosswords and puzzles.
The Beet Foundation - General purpose online English language dictionary and Thesaurus.
Collins Word Exchange - Dictionary searches a variety of word and phrase resources, including the Collins English Dictionary, texting abbreviations, internet links, and words submitted by users.
A Concise Dictionary of Middle English - From A.D. 1150 to 1580. By A.L. Mayhew and Walter W. Skeat. In plain text, or as a zip file, from Project Gutenberg.
DataSegment.com: Online Dictionary - Find definitions by alphabetical browsing or word lookup. Powered by several print dictionaries.
Dictionary of Indian English - Regionalisms defined.
Dictionary.com - Online English dictionary, thesaurus and reference guide. Includes word games, online translator, and word of the day feature.
Dictionary.net - Comprehensive dictionary database of word and phrase definitions from 8 different sources.
Die.net Online Dictionary - Cross-referenced definitions, spelling correction, and searches from WordNet, Webster's, and a variety of specialized sources. Supports regular expressions and the DICT protocol.
Elizabethan Dictionary - Provides the origins and meanings of Elizabethan words and vocabulary including obscure Shakespearean expressions.
English-dictionary.us - Fast no-frills English dictionary.
The English-to-American Dictionary - A humo(u)rous resource for Americans learning British/Scottish English.
Freesearch Dictionary - A British English dictionary powered by the Cambridge University Press that contains around 150,000 words. The site offers a search feature or can be browsed by letter.
HyperDic - Based on the WordNet lexical database and thesaurus, this dictionary covers only a selection of the most frequent English words. Includes synonyms, antonyms, examples and pronunciation, and links between related words.
An Internet Dictionary. - Online dictionary lets you search for definitions, cross-references English dictionaries based on multiple databases. Cross-references English dictionaries based on multiple databases. Downloadable software gives the ability to integrate the dictionary with your browser.
The Jargon Database - A repository of popular neologisms, management speak, and technical terms relevant to various regions, jobs, and cultures, and organized by categories.
Longman Web Dictionary - Searchable dictionary of contemporary english
Macmillan English Dictionaries - Resource site for the Macmillan range of dictionaries.
New Dictionary Words - An interactive quiz to test you knowledge of new words addd to the Merriam-Webster dictionary.
Plan of an English Dictionary (1747) - Letter written by Samuel Johnson to the Earl of Chesterfield setting out his plan for an English Dictionary.
SmartDictionary.com - Supports both searching and browsing and encourages user contributions.
Suggestive Dictionary - An english dictionary which suggests words as you type. Helps explore new words and meanings.
Ultralingua Online Dictionary - Searchable dictionary of the English language, with standard, reverse and phonetic lookup. Also links to a range of other language resources.
Vdictionary.com - Searchable English language dictionary shows results in synonym sets.
Webster's Unabridged Dictionary of 1913 - Forms version. Allows browsing headwords.
Wiktionary - English language Wiki dictionary from the Wikimedia Foundation.
Word Sytes - Use this online dictionary to search for definitions in WordNet, Webster's and many other databases.
WordIQ Dictionary - Searchable definitions available in a variety of dictionaries including Webster's, a legal dictionary, a dream dictionary, and an encyclopedia.
The Wordsworth Compendium - Program containing over 516,000 English words and phrases to solve word puzzles. Useful for the search and manipulation of words in all aspects of logological activities.
Bosworth-Toller Dictionary - "An Anglo-Saxon Dictionary" by Joseph Bosworth, edited and enlarged by T. N. Toller. Each page of the original is available in HTML, TIFF, and PNG formats.
A Concise Old English Dictionary - John R. Clark Hall's "A Concise Anglo-Saxon Dictionary," second edition. Each page of the original is available in HTML, PNG, and TIFF formats.
Dictionary of Old English Project at the University of Toronto - Explains the purpose of the dictionary and the methods used to build it. Includes descriptions of DOE publications and research tools, yearly progress reports, and links to other dictionaries, projects, and resources.
Dictionary of Old English: Sample Entry - Explains in depth the ten fields of information that can appear in a DOE entry, and gives a sample entry that exemplifies these fields.
Dictionary of Old English: Word of the Week - Shows the complete DOE entry for a new word each week.
Electronic Application of an Anglo-Saxon Dictionary - An online version of the Bosworth-Toller Dictionary with extensive search capabilities. Application must be downloaded before it can be used.
EOW Old English Translator - Online tool that translates single Old English words to their modern English equivalents, and vice versa. The tool is named Englisc Onstigende Wordbōc or EOW.
Learning with the Online Thesaurus of Old English - Shows how to use the Thesaurus of Old English. Contains 14 learning units: four introductory essays and ten interactive sessions.
Modern English to Old English Vocabulary - Extensive list of modern English words with their Old English equivalents.
OEME Old English Dictionaries - An Old English to modern English dictionary and a modern English to Old English dictionary from the Old English Made Easy (OEME) project.
Old English Flash Cards - 1500 Old English words with their modern English equivalents. [PDF]
Old English Introductory Glossary - Contains over one hundred basic Old English words with their modern English equivalents.
Old English Lexicon - Simple two-way dictionary. For each letter of the alphabet, lists Old English words with their modern English equivalents and modern English words with their Old English equivalents.
Online Etymology Dictionary - Enables lookup of etymologies of more than 30,000 modern English words. Useful for determining whether a modern English word is descended from Old English.
Thesaurus of Old English - Online thesaurus that provides Old English word searches, modern English word searches, browse searches, phrase searches, and searches on flags indicating restricted occurrence.
Variant Word and Phrase Search Engine - Online tool that facilitates searching the entire Old English corpus for variant spellings of an Old English word or phrase. From the Dictionary of Old English Project.
WordGumbo: Old English - Contains both an Old English to modern English lexicon and a modern English to Old English lexicon.
Businessballs.com - Cockney Rhyming Slang - Origins, derivations and dictionary translations. Cockney rhyming slang uses substitute words, usually two, as a coded alternative for another word.
Carleton County Colloquialisms - Dictionary of the colloquial language of Carleton County, New Brunswick, Canada and Aroostook County, Maine, USA. Audio clips accompany each entry.
Chinese-English Slang Translations - Various expressions, usually colloquialisms or slang, translated for the benefit of native Chinese speakers learning English.
A Dictionary of Slang - English slang and colloquialisms currently used in the UK.
Double-Tongued Word Wrester - A growing dictionary of words from the fringes of English, including jargon, slang, and loan words.
Insultmonger.com - An alphabetized compendium of expressions considered offensive, vituperative, and insulting.
London Slang - Online word and phrase dictionary of Cockney rhyming slang. Also includes examples of film slang.
The New American Sub-Standard Politically Incorrect Dictionary - A glossary of offensive terms or terms with offensive meanings.
The Online Slang Dictionary - A global dictionary of English slang.
PseudoDictionary - Covers slang, made up words, "webspeak", colloquialisms and accepts contributions for new entries.
Sayings Explained - Searchable database of well-known sayings, phrases, and slang, along with definitions and origins.
Slang Search - Definitions of common words in English-language slang, organized by subject area.
SlangSite.com - A dictionary of slang, webspeak, made up words, and colloquialisms. Submissions welcome.
Urban Dictionary - U.S. slang dictionary whose submissions and various definitions are subject to votes for inclusion.
ASL Browser - An online American Sign Language (ASL) browser where one can look up videos of thousands of ASL signs and learn interesting things about them. From Michigan State University. Uses Quicktime.
ASL Dictionary - List of signs organized alphabetically and by corresponding lesson. From the Lifeprint Institute.
ASL Dictionary by Subject - 200 signs in 13 categories: adjectives, expressions, basic communication, colors, family and home, food and drink, miscellaneous, places, school, sports, time, verbs, weather. Black and white photo stills, line drawings, and text explanations. From SIGNHear Communication Center.
Medical ASL Phrasebook - Dr. Eileen Carpenter's advice for medical professionals to learn sign language. QuickTime movies with accompanying written ASL transliteration. Tips and links. Long load.
The Nonverbal Dictionary of Gestures, Signs and Body Language Cues - Developed from the research of anthropologists, archaeologists, biologists, linguists, psychiatrists, psychologists, semioticians and others who have studied human communication from a scientific point of view.
Sign Language Dictionaries Online - Reviews of several sites which feature American Sign Language dictionaries. From about.com. Links.
SignBank - Sign language databases in Sutton signwriting.
All Free Dictionaries Project - Automatic translation database of over 50 tongues with multidirectional lookup capability. Users may contribute by reviewing entries and submitting word lists to help in building a universal dictionary.
AllDictionaries.com - Collection of language and translation dictionaries.
The Alternative Dictionaries - Slang for foreign-language learners, with definitions in English. Collaborative project - entries are made by Internet users. About 80 tongues.
Bohemica's Dictionary Section - General and scientific terminology. Trees, flowers, birds, whales and dolphins, wind. Czech, Slovak, English, Latin, German.
The Bulgarian Rechnik - Contains words and expressions in six languages - Bulgarian, English, Spanish, French, Portuguese, and Italian.
Comparative Vocabulary: English, French, Spanish - Similar nouns, adjectives and adverbs grouped under their endings.
Cool Slang - Collaborative project, open choice of language pairs. Explanation and translation of colloquial expressions.
DicoVox - Bidirectional word translation between English and French and one-way translation from German into English with vocal output capabilities.
Dictionaric - A collection of translating dictionaries by Patrick Jouannès. Various languages. Anthroponymic glossaries of English, French, and Arab names.
Dictionary of Nigerian Languages - English to Igbo, Yoruba, Hausa and Pidgin, the languages of Nigeria.
Digital Dictionaries of South Asia - An electronic library of printed works, multilingual and monolingual, for English-speaking readers of over 30 major languages of the region. Uses Unicode for non-Latin fonts and unusual diacritics.
EUdict - Translation between English and: Croatian, French, Italian, Latin, Spanish. Dutch-Croatian-Dutch. Also one-way translations from German to English, Spanish, or Italian. Interface in English or Croatian.
FinnHun Dictionary and Thesaurus - Finnish, Hungarian, English.
Freedict.com - English to/from Afrikaans, Danish, Dutch, Finnish, French, Hungarian, Indonesian, Italian, Japanese, Latin, Norwegian, Portuguese, Russian, Spanish, Swahili, and Swedish. Online version of the Freelang program.
German-Tagalog-Cebuano-English Dictionary - Word and phrase translations of the Filipino languages Tagalog and Cebuano to German and English. Multimedia and phrase library.
Hello, I love you - How to say the former in various languages. Live chat room.
InOneSearch Translator - English to/from Spanish, French, German, Italian, and Portuguese.
InterGlot.com - Translates between Dutch, English, German, French, Spanish, and Swedish.
International Cursing and Swearing Dictionary - For idiomatic use of offensive language and insults. French, German, Hebrew, Italian, Japanese, Malaysian, Norwegian, Portuguese, Swedish, Spanish, and Turkish into English.
Internet Dictionary Project - Collaborative works. English, Spanish, Italian, German, French, Latin, Portuguese, Assyrian, and Persian.
Internet Picture Dictionary - With interactive activities for French, German, Spanish, Italian, and ESL learners.
Japanese-English-Russian Idioms Dictionary - Scanned pages of a printed work by Я.М.Троицкий, 1998. Users can jump to individual records thanks to alphabetical indexes.
Kamus Online Dictionary - Collaborative project of general scope. Indonesian to/from English, Dutch, French.
Kofar Hausa - Translations between Hausa, English, and German. Basic orthography information, user contributions.
LangToLang - English, Spanish, French, German, Turkish, Italian, Dutch, Portuguese, Rumanian, Swedish, Danish, Polish, Czech, Serbo-Croatian, Hungarian, Finnish, Esperanto, and Swahili.
Lexsee Multi Language Dictionary - Bidirectional lookup and browsable index of terms in 30 languages.
List of Dictionaries - Directory by the University of Paderborn, Germany.
Lithuanian-English-German Dictionaries - Translations and dialogues.
A Little Dictionary of Italian/Tongan/English - Common words and phrases.
LookWAYup - Defines English words and provides optional translations into French, German, Spanish, Dutch, and Portuguese.
Majstro Aplikaĵoj's Translation Dictionary - Based on the Ergane database, which uses the artificial language Esperanto to translate between three-dozen languages.
Megiser's Search Engine (1744) - 3rd edition of Hieronymus Megiser's Dictionarium quatuor linguarum, with English added. Browse in original order, more or less alphabetical in German. Reverse search of Slovenian entries, in original or normalized orthography. Interface in English. Results in English, German, Latin, Slovenian, and Italian.
MIDDIM: Interactive Multilingual Dictionary - Search for words and phrases, flexed paradigms, syntactic analysis, final segments, initial segments. Catalan, English, German.
Online Dictionary.biz - English to/from French, German, Spanish, Italian, Japanese, Chinese, Russian. With definitions and translations. From the European language sections it will translate one word into six languages at one time.
The Papillon Project - Open source lexical database created by computational linguists. Chinese, English, Estonian, French, German, Japanese, Korean, Malay, Thai, Vietnamese.
PetaMem Multilingual Dictionary - Translates words and expressions between English, German, French, Hungarian, Italian, Dutch, Portuguese, Swedish, and Czech.
Picture-Based Multilingual Dictionary - Language-learning tool. Users can try to identify what they see, and then move the mouse over the pictures to generate the answers. Bulgarian, Dutch, English, French, German, Italian, Russian, Spanish, Turkish.
PolarText - Directory of lexicographic works. Norwegian, Danish, Swedish, English, German.
POPjisyo - Pop-up translation system, which helps you read Web pages in a foreign language and learn new words as you go along. Study games. For Japanese, Chinese, Korean, and other languages.
Project for the Documentation of the Languages of Mesoamerica (PDLMA) - Lexicon, phonology, and morphosyntax of selected Mije-Sokean languages: Oluta and San Miguel Chimalapa Soke. Translations to/from Spanish and English.
RealTranslations - Word lookup, retrieving exact and fuzzy matches. English to/from French, German, Italian, Portuguese, and Spanish.
Rojname Dictionary - Bidirectional word lookup. Kurdish to/from English, German, and Turkish.
Sakhr Dictionary - Multidirectional lookup of Arabic, English, and French terms, with Arabic as a primary index.
Somali-English-Italian Trilingual Online Dictionary - Collaborative project administered by RedSea Online.
Sözlük - Over 500,000 entries. General vocabulary, as well as Internet and auto terms. Turkish, Ottoman, English, German, French, Spanish, and Italian.
Sözlük Multilingual Dictionary - By Hidayet Doğan. Turkish from/to English and German.
Susana's Glossaries - Chilean slang; food, countries, capital cities, and inhabitants; technical lingoes; directory. Spanish, English, German, French, Italian, Portuguese, Dutch.
Transylvania.info Dictionary - Three-way lookup between English, Hungarian, and Romanian.
Travlang's Translating Dictionaries - Search to and from Afrikaans, Czech, Danish, Dutch, English, Esperanto, Finnish, French, Frisian, German, Hungarian, Italian, Latin, Norwegian, Polish, Portuguese, Spanish, Swedish, Turkish. Based on the Ergane database by Majstro Aplikaĵoj.
Tritrans - Word translator, supporting English, Spanish, and Norwegian.
Ultralingua.net - Offers translations between English and a number of languages.
VDict: Vietnamese-English-French Dictionary - Supports simultaneous lookup in translation and Vietnamese-only dictionaries, the FOLDOC computing dictionary, and the Wordnet English dictionary.
Vesna: Dictionary - English, Polish, Belarussian, Russian and Ukrainian Translator. Interface available in all 5 languages.
Wiktionary - Collaborative project for creating a free lexical database in every language, complete with meanings, etymologies, and pronunciations.
WinDi Multilingual Dictionaries - Translation, spelling, conjugation, grammar, and sound files for pronunciation. Multidirectional lookup to/from German, English, Spanish, French, Italian, Dutch, and Portuguese.
WordGumbo - Searchable repository of word lists in plain text for a variety of languages, with English equivalents. Also some resources on the comparative linguistics of Indo-European languages.
WordReference.com - Dictionary containing English to/from Spanish, French, German, and Italian, and a language forum.
Word2Word - Directory of lexicographic works, various languages.
Abbreviations.com - Browse acronyms and abbreviations by category.
ACRO.IT Acronym Directory - Collection for information technology and related subjects.
Acronym Arsenal - Computer and communication acronyms.
Acronym Finder - Searchable database covering computers, government, telecommunications, and military situations.
Acronym Guide - A directory of common acronyms by topic.
Acronym Master List for LANL - Large list of acronyms, initialisms, abbreviations, and short forms that are used by or useful to Los Alamos National Laboratory.
Acronym Search - Lookup engine which accepts new entries.
Acronym Server Simplified - A list of acronyms hosted by University College Cork, gathered from many sources and submitted by users.
Acronyma - Definitions in multiple languages.
Acronyms and Abbreviations - Online translation lookup of English and German.
Acronyms and Abbreviations Dictionary - Contains terms with origins in the military, medical, technological, and business and training fields.
Acronyms and Initialisms for Health Information Resources - Acronyms for global information and data resources in the health sciences.
AfkWin Acronyms - Features downloadable browser and filter software. In Dutch and English.
Altronix Technical Acronyms - A comprehensive list in common usage in the computer, electronics and engineering fields.
Babel: Computer-related Acronyms - A glossary of computer science and internet acronyms.
Biomedical Acronym Resolver - Tool for conversion.
Broadband Acronyms & Definitions - Terms used by service providers and software developers.
Cartography Acronyms - Dictionary of terms used in geographic information systems, cartography and remote sensing.
CDIA Center Acronyms and Abbreviations - Carbon Dioxide Information Analysis Center indexed list.
CRM Acronyms - Frequently used cultural resource management acronyms.
Dictionary of Initials Acronyms and Abbreviations Used by Counselors - Subdivided by first letter.
Dictionary of Quaternary Acronyms and Abbreviations - Acronyms and abbreviations that are common in Quaternary studies
Downloadable Computer Acronyms - Collect of computer and computer-related acronyms in downloadable format.
eBay Acronyms - Abbreviations one might find in eBay item listings and on community discussion boards. Many of the terms are used at other auction websites as well.
Explain Acronym Search - Provides a tool for conversion.
Freeware Hall of Fame - Acronyms and emoticons used in the computer community.
Frequently Seen Space/Astronomy Acronyms - Terms commonly appearing in space-related newsgroups.
Glossary and Acronyms for PC and Server Technologies - Glossary of hardware and driver development terms for Windows products.
The Great Abbreviations Hunt - A general guide to three letter terms.
Hawkman's Automotive Abbreviations - Indexed collection.
Health & Safety Acronyms - Short list used in the field of UK Occupational Health and Safety.
High Energy Astrophysics: Common Acronyms - A small, very specialized reference.
Home of the Network Acronyms - Computer network acronyms in a first-letter-per page format.
Learning, Performance, and Training Acronyms - Small collection of human resource oriented terms.
List of US Government Acronyms - A glossary of terms found in US government databases and in print publications.
MediLexicon - Searchable database of pharmaceutical, healthcare and medical abbreviations and acronyms.
Oceanic and Atmospheric Acronyms - Specialized collection from the US National Oceanic and Atmospheric Administration.
Svetlozar Online's Abbreviation Glossary - Computer and telecommunications acronyms and their meanings. Searchable and browsable.
The Ultimate Computer Acronyms Archive (TUCAA) - Offers a searchable or browsable interface.
USPS Acronyms and Abbreviations Glossary - United States Postal Service terms and operational numbers.
USPS Official Abbreviations - Official abbreviations of the United States Postal Service.
V.E.R.A. - Virtual Entity of Relevant Acronyms - List of computer acronyms, with cross references.
Veterinary Abbreviations and Acronyms Glossary - Terms commonly used in veterinary practice.
Wiley InterScience Acronym Finder - Scientific and technical terms, and symbols, with browsing and searching tools.
WWW Acronym and Abbreviation Server - Allows a search for terms containing a particular word.
Altaic Etymology - Online database version of the Altaic Etymological Dictionary by S. Starostin, A. Dybo and O. Mudrak.
American Dialect Society - A scholarly association dedicated to the study of the English language in North America.
Businessballs.com - Etymology of Clichés, Expressions and Words Etymology - English language terms and expressions.
A Comparative Dictionary of Indo-Aryan Languages - Online version of the indexes of R.L. Turner's 1962-1985 dictionary from the Digital Dictionaries of South Asia.
Dave Wilton's Etymology Page - Devoted to etymology of common words and slang phrases.
English Language Roots: The Meanings of Word Prefixes, Suffixes and Syllables - Reference chart for Greek, Latin, and other roots of the English language. Understanding such roots can help guessing the meaning of words and creating neologisms or brand names.
Etymologic - The brain-twisting etymology game.
Etymologically Speaking - A list of some curious word origins.
Etymology - Word origins and links.
European Sayings & Idiomatic Expressions - Dedicated to gathering sayings and idioms and their translation/explanation from all over Europe. User contributions welcome.
Exploring English Words - Exploring English words that are derived from Latin and Greek sources with etymologies and vocabulary activities.
Focusing on Words - An advanced Latin-Greek-English vocabulary source of etymologies with thematic units of roots, prefixes, and suffixes, and vocabulary quizzes.
MooT - The game of grammar, semantics, and etymology. Play online the game that investigates the history and meaning of English words.
Nautical Expressions in the Vernacular - Myriad expressions in everyday English have nautical origins. This web page lists expressions and definitions mentioned by listswains, members of the Patrick O'Brian Mailing List, also known as the Gunroom.
New Words In English - Neologisms and novel uses of words in English collected by members of the class Linguistics/English 215, Words in English: Structure, History and Use, taught by Suzanne Kemmer at Rice University.
New York State Facts - The origins of New York State's county names.
Online Etymology Dictionary - History and evolution of more than 30,000 words, including slang and technical terms.
Origin of Phrases - Categorized etymologies of phrases.
Oxford English Dictionary - Presents a word a day complete with pronunciation, spellings, etymology, quotations and date chart.
Pandora's Word Box - Relates medical terminology to the humanities, offering a weekly overview with references to classical etymology.
The Phrase Finder - The meanings and origins of thousands of English phrases and sayings. Also contains a discussion forum to ask a panel questions on the meaning and origin of phrases.
Richard Lederer's Verbivore - Linguistic fun from, Richard Lederer, the best-selling author of The Word Circus and the new Sleeping Dogs Don't Lay, a helpful guide for grappling with vexing grammar questions.
Roots of English - An etymological dictionary you can download by Prof. Eugene Cotter, Seton Hall University.
Sayings and Everyday Expressions - Your online source for the sayings and expressions you use everyday. Search for their meaning, history and origin, find sayings, expressions, phrases, quotations, cliches, unusual words, and wordplay.
Taiwan Teacher - A new word or phrase posted every week giving you the meaning, origin and an example of the usage of the word or phrase.
Take Our Word for It - Weekly etymology magazine.
What's The Meaning of This? - The origins of quirky English words and phrases like "In like Flynn" and "blackmail."
Word and Phrase Origins - Directory. Part of the Internet Public Library. Describes books and web sites that might be helpful. Offers a hint on how to use an ordinary search engine when looking for etymology.
The Word Detective - Words and language in a humorous vein. The online version of The Word Detective, a newspaper column answering readers' questions about words and language. Written by Evan Morris.
Word Origins - This regularly updated page, provided by The Writer's Place, focuses on a word and its spelling, pronunciation, and derivation.
Word Origins and Meanings of Economic Terms - Click on a word and go right to a brief discussion of its origin.
Word Quests for Word Seekers - Searchable dictionary of word origins, organized in cross-referenced thematic lists by Latin and/or Greek roots. English entries are also defined.
Word Sources - Includes a searchable database of Latin and Greek roots and affixes, a free newsletter, and links to other sites.
Word Spy - Collection of recently coined words, existing words that have enjoyed a recent renaissance, and older words that are now being used in new ways.
Words with Heathen Origins in the Scriptures - An etymological study of numerous words used in churches and Scriptures that have their origin in pagan religions.
World Wide Words - Michael Quinion writes about International English from a British viewpoint. Hundreds of pages on the history, origins, evolution and idiosyncrasies of English, with features on new words and words in the news.
Antique Bottle Terms - Terms used to identify and describe the condition of antique bottles.
Apparel Vocabulary - User contributed glossary of fashion and apparel terms.
Ballistic Dictionary - Dedicated for ballistic-textile related terms. More than 300 terms collected and defined by experts from the industry. Sponsored by Rabintex Industries LTD.
Bar-None Drinking Dictionary - Hundreds of definitions for ingredients and techniques used in mixing alcoholic beverages.
BKWine's Short Gastronomic Glossary - A short gastronomic glossary with food and restaurant terms in English, French and Swedish.
Cargo Shipping Acronyms - Glossary of Cargo-Shipping terminology.
Cat Dictionary - Lynne Marie Stockman's collection of terms relating to cats.
Cat Fancier's Glossary - Glossary, acronyms, list of titles and breed descriptions.
Compressed Air Glossary of Terms - Comprehensive glossary on compressed air
Dictionary of Financial Scam Terms - A guide to financial terms as distorted by con artists to defraud victims.
Dictionary of Gambling - Terms covering gambling, casino games, and the sports on which money is bet.
An Espresso Glossary - Terms encountered when talking about or using espresso machines.
Fins' Aquarium Glossary - Vocabulary relating to aquariums.
Glossary for the Modern Soap Maker - A collection of soap making terms, definitions and acronyms.
Glossary of Terms for Dyeing - Terms related to the dyeing of textiles.
Glossary of Common Latin Terms Found in Imprints of Early Printed Books - Includes examples of usage.
Glossary of Library Terms - List provided by Cornell University Library.
Glossary on Transnational Organized Crime - Collection of English, Russian and French language terms by Roman Nazarov.
GlossPost - Glossaries' mailing list for translators, interpreters, terminologists and technical writers.
Hiker's Lexicon - Common and uncommon technical terms, slang, abbreviations and acronyms used by hikers and backpackers.
Jargon Scout - Trendy internet jargon. No longer updated; last update was June 2001.
Learning Disabilities Terms - Compilation of learning disabilities terms and definitions adapted from a number of sources.
Leather Terms - Glossary of the most common terms used in the leatherworking industry.
Lottery Glossary - Lottery related terms and definitions, comprised largely from contributions by members of an online lotto community.
Mobspeak - Common slang terms used by "the Mob" extracted from "The Mafia Handbook" by Douglas Le Vien, Jr.
Natural History Terms - Glossary of terms used by practicing biologists and paleontologists in various fields.
NumisMedia Glossary of Numismatic Terms - Over 500 terms and their definitions.
Oil Analysis, Lubrication and Filtration Terms - Online, searchable collection of lubrication and oil analysis terminology.
Olah.com - Denim Survival Guide - Includes a dictionary of textile terms.
Online Dictionary of Library and Information Science - Reference resource of library and information science terminology maintained by Libraries Unlimited.
Paper Money Glossary - Terms used in the collection, study and production of paper money.
PCGS Coin Collecting Glossary - Terms and slang of the rare coin market.
Perfumery Glossary - Collection of terms for fragrances, cosmetics, and their ingredients.
Police Jargon - Glossary of police terms and acronyms from the North Yorkshire Police Department (UK).
Pueblo Pottery - Glossary of Pueblo-specific and general related pottery vocabulary.
Rock Art Glossary - Glossary of terms used in the study of Native American Indian rock art.
1960s Slang - Collection of some slang words used in the 1960's.
Sex-Lexis - Dictionary of sexual terms and expressions and dictionary of the "F" word, with quotes, synonyms, and cross-references.
Silicon Valley Slang - Technical terms and expressions commonly used in Silicon Valley.
Speleological and Caving Terms - Australian Speleological Federation glossary of speleological and caving terms with references to related literature.
Super Gigantic Y2K Winegrape Glossary - Cross-referenced glossary of wine grape varieties.
Sushi Vocabulary - Glossary of sushi-related terms and Japanese names for common fish served as sushi.
Tealand Tea Words - Glossary of tea preparation and production terminology.
Technical Services Department Glossary - Library-related terms and jargon. Based on glossary created for the Cornell University Libraries, with terms and definitions borrowed from the Anglo-American cataloguing rules and other sources.
Terminology Collection - Multilingual glossaries for specialized fields from the University of Vaasa, Finland.
Texas Talk - Collection of words, phrases and slang used in Texas.
Travel Industry Dictionary - Presented by the Home-Based Travel Agent Resource Center. Over 4,000 entries: industry terms, jargon, abbreviations, acronyms, and slang used by agents, suppliers, and professionals.
Universal Switching's Glossary of Electronic Terms - Available in html or pdf formats.
Whisky glossary - Small glossary of whisky and general distilling terms with diagrams.
Blissymbol Dictionary - Comprehensive online dictionary of the Blissymbolics Language - used by linguistically disabled persons.
Dictionary of Symbolism - An online aid for exploring the meanings of symbols.
Review of Liungman's Dictionary of Symbols - Critical review by Seth Maislin, indexer.
Symbols.com - The world's largest online encyclopedia of graphic symbols, ranging from ideograms carved in mammoth teeth by Cro-Magnon men, to hobo signs and subway graffiti.
Commonly Misspelled Words in English - Select a reference source and click on any word in a list to get a definition, pronunciation or translation of that word to your language. Take a quiz on spelling.
Daily Vocabulary Test - A new short three question multiple choice quiz every day to test your vocabulary knowledge.
Dave's Choice Words - Dave's Choice Words are fun, free vocabulary building exercises.
English Words from Chinese - English words which have come into the language from Chinese.
Exploring Words - Another advanced English-vocabulary program for long-distance learners of all ages, everywhere.
Grandiloquent Dictionary - A collection of 2000 words which are often omitted from dictionaries, and are in danger of being eliminated from the English language.
Heenan's Universal Dictionary - A collection of weird and wonderful words and their alternate meanings; sources, too, where available.
International House of Logorrhea - A online dictionary of obscure and unusual words and obsolete terms to help enhance vocabulary; over 15,500 English words with brief definitions.
MT Desk - Word lists by medical speciality including Alternative Medicine, Cardiovascular, Dermatology/Skin, and other areas of care.
The Phrontistery - A site for lovers of obscure and unusual words, featuring a dictionary of rare words, word lists of vocabulary on specific topics, essays and discussions on etymology, vocabulary and language usage.
Vocab Vitamins - Introduces an uncommon word or phrase each day, along with a definition. Includes archives, and a daily email service.
Vocabulary Activities for Standardized Tests - Interactive activities on word lists based on themes.
VocabularyMail.com - A free daily email broadcast of one to three words, their definitions, and explanations and examples of how to use them effectively in your speech and writing.
Vokabeln.net - Web-based vocabulary trainer with a multilanguage interface. Features shortcuts for special characters used in ~100 languages.
A Word A Day - Today's Word - Audio clip, definition, and example usage.
Word of the Year - Find out which word Merriam-Webster named the word of the year and click through their list of most popular words.
WordGenie - An electronic vocabulary enhancement system that runs as a screen saver on your PC computer.
AmericanLiterature.com - Gives the meaning of a single word everyday, and links to an archive of previously listed words. Also includes a daily random quote.
Dictionary.com : Word of the Day - Features the meaning of a single random word, its pronunciation, etymology and examples of word usage. Includes a daily word mailing list.
German Word of the Day - Learn German words with meanings and pronunciations.
Hebrew - Word of the Day - Offers mailing list two or three times per week featuring modern day and biblical Hebrew words. Provides information on subscribing.
Italian Word of the Day - Features a new word every day spoken in Italian by a native speaker and a phrase using the word in an example. Includes translation in English.
Merriam-Webster's Word of the Day - A searchable dictionary and thesaurus. Includes word games, daily word with its meaning, history, usage in sentences, and etymology.
Mot du Jour - French Word of the Day - Provides a new French word emailed daily with pronunciation, example of usage, and related words. Includes archive of previous French words, and subscription information.
Oxford English Dictionary : Daily Word - Features a daily word with its meaning, pronunciation, spelling, etymology, and date chart.
Ransford.org Word of the Day - Features a mailing list, with daily post of a new word.
Travlang's Words for Travellers - Includes a daily English word and its translation in many other languages.
Vocabulary List - A free mailing list which features the meaning and pronunciation of a different word daily.
Word of the Day - Spanish Language - Contains a word from the Spanish vocabulary each day of the month.
Word of The Day by WordThink - WordThink's Word of The Day provides unpretentious words that are insightful and persuasive.
Wordsmith.org - Features a daily word with its meaning, etymology, usage and pronunciation. Also offers anagrams, acronyms, dictionary and thesaurus by email.