Online Dictionaries


Well-Known English Dictionaries

Bilingual Dictionaries

Visual Dictionaries

  • 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

Dictionaries of 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


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


Other Dictionaries

  • Answers Search for definitions, pronunciation, and even translation
  • Word Reference You can get definitions in different languages, by Michael Kellogg of
  • 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