SM Diccionarios
Education
The Tech Terms Computer Dictionary
The Tech Terms Computer Dictionary contains over 1200 technical terms with easy-to-understand definitions.
Webopedia
Webopedia is the most comprehensive information technology reference. Read computer definitions and study guides now.
Artha
Bab.la
Search translations in the dictionary and have fun learning languages with vocabulary lessons and many free games and quizzes.
Cambridge Dictionary
The most popular dictionary and thesaurus for learners of English. Meanings and definitions of words with pronunciations and translations.
Collins Dictionary
Pioneers in Language Reference for 200 years. Popular and trusted online dictionary with over 1 million words. Find definitions, meanings, synonyms, pronunciations, translations, origin and examples.
Diclib
dict.org
Dictionary by Merriam-Webster
The dictionary by Merriam-Webster is America's most trusted online dictionary for English word definitions, meanings, and pronunciation. #wordsmatter
Dictionary.com
Dictionary.com is the world’s leading online source for English definitions, pronunciations, word origins, idioms, Word of the Day, and more.
Dictionary.net
Free searchable encyclopedia with definitions, usage examples, thesaurus, antonyms, idioms, rhymes, quotes and other useful information.
English-Corpora
Compare genres, dialects, time periods. Search by PoS, collocates, synonyms, and much more.
Find Words
Freak Thesaurus
Frankensaurus.com | Research topics to find similar and related connections. Search and find enlightenment.
Free Dictionary
Free Dictionary definitions from language dictionary databases
Freelang Dictionary
Freeware dictionary program to download (Windows or Android) with many wordlists to browse offline or look up online. We also provide free human translation and professional translation.
OneLook Dictionary
Online Etymology Dictionary
The online etymology dictionary is the internet's go-to source for quick and reliable accounts of the origin and history of English words, phrases, and idioms. It is professional enough to satisfy academic standards, but accessible enough to be used by anyone. The site has become a favorite resource of teachers of reading, spelling, and English as a second language.
Oxford English Dictionary
The OED is the definitive record of the English language, featuring 600,000 words, 3 million quotations, and over 1,000 years of English.
Oxford Learner's Dictionaries
The largest and most trusted free online dictionary for learners of British and American English with definitions, pictures, example sentences, synonyms, antonyms, word origins, audio pronunciation, and more. Look up the meanings of words, abbreviations, phrases, and idioms in our free English Dictionary.
Reverse Dictionary
Sideways Dictionary
description
Slangit
Slangit is a clean slang dictionary that is safe for kids and parents alike.
The Free Dictionary
The World's most comprehensive free online dictionary, thesaurus, and encyclopedia with synonyms, definitions, idioms, abbreviations, and medical, financial, legal specialized dictionaries
The Skeptic's Dictionary
TheSage English Dictionary and Thesaurus
Urban Dictionary
The safeguarding of Earth and other worlds from biological cross-contamination (i.e. billionaires with too much time on their hands). Also known as “planetary protection.” Planetary protection / quarantine “reflects both the unknown nature of the space environment and the desire of the scientific community to preserve the pristine nature of celestial bodies until they can be studied in detail.” There are two types of interplanetary contamination. Forward contamination is the transfer of viable organisms from Earth to another celestial body. Back contamination is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.
WordWeb
Baike.com
快懂百科是一部准确、全面、易读、丰富的网络百科全书,助您轻松探秘世界,学习知识。