Merriam-Webster Dictionary
Free, online version of the Merriam-Webster English dictionary, with searchable dictionary definitions, thesaurus, and a student dictionary for kids. Also offers online subscription versions of Merriam-Webster's collegiate dictionary and the Encyclopedia Britannica.
www.m-w.com
OneLook Dictionaries
Dictionary search service that offers definitions from a variety of online English and foreign language dictionaries. Find the definition of a term, see terms that correspond to definition key words, or search for the correct spelling of a word.
www.onelook.com
YourDictionary
Directory of online English dictionaries and thesauruses, translation dictionaries of 150 different languages, grammar help for 70 languages, and pages of linguistic fun.
www.yourdictionary.com
Dictionary.com
Free, online English dictionary site, offering word definitions, synonyms, word of the day emails, and writing resources.
www.dictionary.com
Free Dictionary, The
Free online dictionary search, offering English, medical, legal, and computer dictionaries as well as a thesaurus, encyclopedia, and literature reference library.
www.thefreedictionary.com
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Cambridge International Dictionaries
Search Cambridge's free online dictionaries of English, English for students, French, Spanish, phrasal verbs, or idioms.
dictionary.cambridge.org
AskOxford.com
Searchable online version of the Compact Oxford English Dictionary, as well as thesauri, quotations, foreign language dictionaries, a word of the day, and games.
www.askoxford.com
DICT.org
Dictionary search site that draws on dictionaries and reference sources including Webster's, Jargon File, translation dictionaries, and Roget's Thesaurus. Created as part of an experiment to create a data exchange protocol for dictionary information.
www.dict.org
Merriam-Webster's Word Central
Offers kids a student dictionary, Word of the Day, and interactive word games. Includes homework help and lesson plans for parents and teachers.
www.wordcentral.com
AllWords.com
Online English dictionary with multi-lingual translations to or from Dutch, French, German, Italian, or Spanish. Includes crossword puzzle solver features, creative writing tips, and slang words.
www.allwords.com
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Wordsmyth Dictionary-Thesaurus
Online dictionary, thesaurus, and other American English resources for students and the general public. Find word definitions, spellings, and synonyms, or try tools like the Wordsmyth glossary maker or anagram solver.
www.wordsmyth.net
HyperDictionary
Online dictionary featuring links to explanations of difficult terms within a given word's definition. Includes computer, dream, and medical dictionaries.
www.hyperdictionary.com
VoyCabulary
Turns the words on a webpage into links to their dictionary definitions, so you can look them up with a single click. Includes thesauri and foreign language dictionaries.
www.voycabulary.com
Newbury House Dictionary of American English
Free online version of the Newbury House Dictionary of American English, with simple definitions for students and English learners.
nhd.heinle.com
CoolDictionary.Com: Audible Webster Dictionary
Online version of Webster's American Dictionary, with audio clips of the correct pronunciation of words and quotes.
www.cooldictionary.com
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Encarta World English Dictionary
Online English dictionary and thesaurus, featuring audio clips of words pronounced, as well as a word of the day.
dictionary.msn.com
Word Assault
Searches multiple English dictionaries for words and phrases. Includes thesaurus, place names, computing terms, a Bible dictionary, and the CIA World Factbook.
www.wordassault.com
InfoVisual
See definitions for terms from biology, anatomy, and music with the InfoVisual visual dictionary. Browse by topics and thumbnails, or search for a word or phrase.
www.infovisual.info
OneLook Reverse Dictionary
Reverse dictionary lets you enter a concept to see matching words and phrases, for those times when you remember the definition but not the word.
www.onelook.com/reverse-dictionary.shtml
WordIQ.com
Reference resource that includes an encyclopedia, dictionary, almanac, thesaurus, and dream interpretation database as well as a general search engine.
www.wordiq.com
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Wiktionary
Collaboratively produced multilingual dictionary, with meanings and definitions, etymologies, and pronunciations. From the founders of Wikipedia.
www.wiktionary.org
Hypertext Webster Gateway
Online version of Webster's Dictionary, searchable by word or phrase.
www.bennetyee.org/http_webster.cgi?
Longman Dictionary of Contemporary English
Online English dictionary, with photo illustrations, audio files of selected word pronunciations, example sentences, and lesson plans for teachers. Also available as a CD-ROM edition.
www.ldoceonline.com
Dictionary of American Regional English
Online American English dictionary, specializing in local slang and regional words and phrases.
polyglot.lss.wisc.edu/dare/dare.html
English-Dictionary.us
No-frills online English dictionary that users can search by word or phrase or browse alphabetically.
www.english-dictionary.us
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American Heritage Dictionary of the English Language, Fourth Edition
Free online version of the American English dictionary featuring over 90,000 definitions, most with audio word pronunciation guides.
www.bartleby.com/61
Grandiloquent Dictionary
Collecting and defining the most rare, obscure, and pretentious words in the English language. Available in HTML and PDF formats.
www.islandnet.com/~egbird/dict/dict.htm
ARTFL Project: 1913 Webster's Revised Unabridged Dictionary
Search for and browse historical dictionary definitions from the 1913 edition of Webster's Dictionary.
humanities.uchicago.edu/orgs/ARTFL/forms_unrest/webster.form.html
Omnificent English Dictionary In Limerick Form, The (OEDILF)
Dedicated to writing at least one limerick for each and every word in the English dictionary.
www.oedilf.com/db/Lim.php
Datasegment Online Dictionary
Online dictionary allowing users to search and browse word definitions from multiple English dictionaries and a thesaurus.
onlinedictionary.datasegment.com
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WordWeb Online
Online dictionary and thesaurus which covers American, British, Australian, Canadian, and Asian English spellings and words.
www.wordwebonline.com
WebRef.org
Providing glossaries of terms related to various scientific disciplines, aesthetic arts, and biographical information.
www.webref.org
Yahoo! Reference
Find an online encyclopedia, quotations, and other fact-finding tools at Yahoo! Reference. Search for dictionary definitions, spelling help, thesaurus synonyms, maps, flags, and other answers.
education.yahoo.com/reference
BambooWeb Dictionary
Online dictionary and encyclopedia providing articles and information on a wide variety of topics. Browse encyclopedia entries by subject, or search for information by key words.
www.bambooweb.com
Webster's Dictionary 1913 Edition
The 1913 edition of Webster's famous dictionary of American English.
www.bibliomania.com/2/3/257/frameset.html
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iTools Language Tools
Online dictionary service that includes a thesaurus, industry-specific terminology, crossword puzzle and Scrabble help, and translation tools.
www.itools.com/lang
ObjectGraph Dictionary
Free online dictionary that suggests words and phrases as you type in the search box.
www.objectgraph.com/dictionary
LookWAYup
Online multilingual dictionary and thesaurus search tool that can be embedded into a web page.
www.lookwayup.com
Collins Word Exchange
Online dictionary and word tools from Harper Collins. Search word definitions and thesaurus entries, submit a new word to the dictionary, or try out the Scrabble word checker, crossword solver, or texting abbreviation tools.
www.collins.co.uk/wordexchange
Dictionaryofsign.com
Online international dictionary of sign language. Allows users to send in their own video clips of sign language for use in the dictionary.
www.dictionaryofsign.com
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eLook.org Dictionary
Online dictionary provides definitions, synonyms, and related words.
www.elook.org/dictionary
Language Bin, The
Online dictionary featuring an interface that allows users to see word definitions from multiple sources simultaneously.
language.bin.org/ref/dict
Difficultwords
A searchable dictionary of selected difficult or uncommon words.
difficultwords.8-d.com
123words.com
English dictionary with lists of words sorted by their popularity on the Web. Features links to Spanish, French, Italian, Chinese, Hindi, etymology, and thesaurus resources for each word.
www.123words.com
DifficultWords.info
Provides a searchable dictionary of selected difficult or uncommon words.
www.difficultwordsinfo.co
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