Online Dictionaries

Dictionary.com Largest free online dictionary and audio pronunciation
Your Dictionary The #1 Online Dictionary gives you definitions, thesaurus entries, spelling, pronunciation, and etymology results
Cambridge International Dictionaries Online dictionaries of English, idioms, and phrasal verbs
Merriam-Webster Dictionary A free online dictionary, thesaurus, audio pronunciation, word games, and word of the day
Newbury House dictionary Over 40,000 entries with simple, clear definitions, and a wealth of sample sentences and idioms
Vocabulary The world's fastest, smartest dictionary: Start typing a word and you'll see the definition
Idioms and phrases Over 7,000 idioms current in British, American and Australian English
Learn how to pronounce words Search for a word and watch the videos of real people naturally speaking the word

English-Chinese Dictionary Type in an English word and get its meaning in Chinese
Chinese-English Dictionary Type in Chinese and get its meaning in English
English<>Spanish Dictionary Compilation of general and academic terminology that students and professionals encounter
Dictionary of Spanish With over 54,000 entries, you can type in an English word to search for the Spanish word
English-French Dictionary You can search for an English word or a French word
English-German Dictionary Nearly 230,000 entries. A service provided by LEO - Link Everything Online
English-Japanese Dictionary Typing in an English word and get definitions in Japanese
English-Korean Dictionary Typing in an English word and get definitions in Korean
Bab.la Dictionary Special features include search filters, synonyms, pronunciation, sample sentences

Picture Dictionary A completely free, online multilingual picture dictionary designed for ESL students
Visual Dictionary Online 20,000 terms with contextual definitions, developed by terminology experts
Visual Dictionary To learn by way of image with thematic, clear and precise pages, with concise and rigorous texts

A Pronouncing Dictionary of Proper Nouns including a list of common names for English speakers, names of 50 states, and 43 Presidents
Forvo Forvo is the largest pronunciation guide in the world. Ask for that word or name, and another user will pronounce it for you
Pronunciation of Names of People and Places English Pronunciation Guide to the Names of People, Places, and Stuff
Pronunciation of Words and Phrases Type in a word or phrase to listen to its pronunciation, including proper nouns

Acronym Finder The world's largest and most comprehensive dictionary of acronyms and abbreviations
Acronym A big acronym database. New acronyms are constantly added by users
Acronym Guide A Directory of Common Acronyms and Abbreviations by Topic

thesaurus.com Quickly find accurate and up-to-date synonyms, antonyms, and related words
thesaurus.net A popular online dictionary of synonyms
Free Thesaurus Unique and fun interactive tool for visual thesaurus

Alan Cooper's Homonym A list of over 1,500 homonyms, words that sound the same, spelled differently, and have different meanings
Homophones/Homonyms A list of common homonyms with exercises

Answers Search for definitions, pronunciation, and even translation
Word Reference You can get definitions in different languages, by Michael Kellogg of WordReference.com
Word Net Search An online lexical reference system whose design is inspired by current psycholinguistic theories of human lexical memory
Netlingo It contains hundreds of words and definitions that describe the technology and community world of the Web
Online Dictionary of Computing It contains over 13,000 hypertext links to different terms.
Meta Dictionary This site searches through over 400 dictionaries for the word you type in
The Phrase Finder Typing a word and getting a list of phrases
A Multi-Purpose Dictionary It is a dictionary where you can find rhymes, synonyms, match consonants, and even search for pictures for the word you type in