Dictionaries & Thesauri

Definitions, Etymologies, Synonyms & Antonyms, and More

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Abbreviations and Acronyms
Abbreviations.com
Abbreviations in Dictionaries
List from Dictionary.com.
Acronymfinder
You can enter the exact acronym, "begins with" or a key word from the acronym.
ChatSlang.com
Chat acronyms, texting abbreviations, and emoticons (smileys). Search or browse.
Domain Suffixes
Common United States Domain Suffixes and Domain Suffixes of Countries Around the World.
IM and Texting Acronym Glossary
A list of popular instant messaging and text messaging abbreviations. From The Online Mom.
Netlingo
A list of acronymns and text messaging shorthand.
Official USPS Abbreviations
Post office abbreviations. Includes states, street suffixes, and "secondary unit designators." From United States Postal Service.
Stock Market: Company Stock Symbols
Look up companies and their stock symbols.


Dictionaries - Words, Their Meanings, Usage, Etymology
Cambridge Dictionaries Online
Search several different dictionaries including the Advanced Learner's Dictionary, American English, and the International Dictionary of Idioms. Advanced Learners Dictionary includes audio pronunciations for British and American English.
Definitions of Computer and Internet Terms
Dictionary.com
Includes audio pronunciations of words and a thesaurus.
Internet Anagram Server
Learner's Dictionary: American English Dictionary for ESL, EFL, and TOEFL Students
From Merriam-Webster. Includes audio pronunciations of words.
Merriam-Webster Online
Dictionary and Thesaurus. Includes audio pronunciations of words.
Merriam-Webster Visual Dictionary
Browse by theme or image or search for words and see illustrations.
OneLook Dictionaries
Query more than 500 general and specialized dictionaries at once. Links to all of them organized by topic.
Online Etymology Dictionary
Word origins (etymologies). Search or browse words, word parts. Meanings are drawn from multiple etymological dictionaries.
Oxford English Dictionaries
Words, definitions / meanings, etymologies, phrases, and other word-related online trivia and activities. From Oxford University Press.
Reverse Dictionary
"The reverse dictionary lets you go from a concept/idea/definition to words and phrases used to describe that concept."
Wordnik
"Our goal is to show you as much information as possible, as fast as we can find it, for every word in English, and to give you a place where you can make your own opinions about words known."
Visuwords
An online graphical dictionary. Enter a word and it will give you synonyms, verbs, parts of speech, adverbs, adjectives and more.
Visual Dictionary
Browse by category or type in an object. An image is displayed with all its parts labeled using English or French terms.
World Book Encyclopedia
Includes a dictionary of 250,000 entries available to Middletown Thrall Library card holders.
Your Dictionary
More than just a site of standard English dictionaries and thesauruses, this site also includes over 200 foreign language dictionaries and translator programs as well as specialized dictionaries for professional vocabularies like medicine, business, and computer science.


Phrases, Sayings, Idioms Web Resources
Cambridge International Dictionary of Idioms
Search phrases by one or more keywords.
Brewer's Dictionary of Phrase and Fable
"Giving the derivation, source, or origin of common phrases, allusions, and words that have a tale to tell."
Dictionary of American Regional English (DARE)
From the University of Wisconsin-Madison. You can browse 100 entries from DARE at this link (http://dare.wisc.edu/?q=node/163). Middletown Thrall Library provides access to the complete print editionof DARE (volumes 1 - 5) in our Reference collection (at REF 427.973 DIC).
English Idioms and Idiomatic Expressions
Search or browse entries.
The Phrase Finder
"The meanings and origins of over 1,200 English sayings, phrases and idioms."
Quotations
Popular and historic quotes.


Rhyming Dictionaries - Find Rhymes for Words
Rhymes.net
Browse or search.
RhymeZone
Type in a word to find its rhymes, synonyms, definitions and more.
Rhyming Dictionaries
International rhyming dictionaries for Spanish, Italian, French, German, and several other languages. From Alcor Software.
WriteExpress: Rhymer - A Free Online Rhyming Dictionary
After entering the word to rhyme you can choose end rhymes, last syllable rhymes, double rhymes, beginning rhymes, and first syllable rhymes.


Thesaurus / Thesauri - Find Synonyms & Antonyms
Merriam-Webster Online: Thesaurus
Roget's International Thesaurus of English Words and Phrases
Includes Roget's II: The New Thesaurus and Roget's International Thesaurus of English Words and Phrases. Provided by Bartleby.com.
Synonym.com
Type in a word to find its synonym, antonym or definition.
Thesaurus.com
Read carefully to avoid advertisements. The search box is currently at the very top of the page, and all advertisements are marked as such. See also their Roget's Thesaurus Alphabetical Index".
WordNet
This database from Princeton University can be used simply as a thesaurus or to do lexical research. Click on "Use Word Net Online" to do a search.
Your Dictionary
More than just a site of standard English dictionaries and thesauruses, this site also includes over 200 foreign language dictionaries and translator programs as well as specialized dictionaries for professional vocabularies like medicine, business, and computer science.

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