http://www.dictionary.com/
Dictionary.com is the world's leading online dictionary with millions of users. Find meanings, synonyms, word origins, example sentences, word games, and more for any English word.
https://www.merriam-webster.com/
AMP: [noun] a nucleotide C10H12N5O3H2PO4 composed of adenosine and one phosphate group that is reversibly convertible to ADP and ATP in metabolic reactions — called also#R##N# adenosine monophosphate, adenylic acid; compare cyclic amp.
https://dictionary.cambridge.org/
Find meanings and definitions of words with pronunciations and translations in English and other languages. Explore word games, blog posts, new words and more from Cambridge Dictionary.
https://www.merriam-webster.com/dictionary/dictionary
Learn the meaning, history, and usage of the word dictionary from the online dictionary of Merriam-Webster. Find synonyms, examples, related articles, and more for dictionary and other words.
https://dictionary.cambridge.org/dictionary/
Search for definitions, synonyms, grammar, and pronunciation in English and other languages with Cambridge dictionaries. Choose from corpus-informed dictionaries for learners, translators, and native speakers.
https://www.oxfordlearnersdictionaries.com/
Find definitions, translations, and grammar explanations for British and American English words, phrases, and idioms. Explore word lists, topic dictionaries, and premium products to improve your English.
https://dictionary.cambridge.org/us/
Find definitions, meanings, translations and word games for English and other languages. Browse the English dictionary alphabetically or by topic, or search for new words and expressions.
https://www.collinsdictionary.com/dictionary/english
Collins online Unabridged English Dictionary covers many literary and rare words, with audio and video pronunciations, synonyms, example sentences, and translations. Ideal for word lovers, word gamers, and word geeks everywhere, it also offers quizzes, word lists, and grammar tools.
https://www.merriam-webster.com/thesaurus
Find the right word for your writing with the Merriam-Webster Thesaurus. Browse millions of synonyms, similar words, and antonyms, and play word games and quizzes.
https://www.dictionary.com/browse/definition
Definition definition: the act of defining, or of making something definite, distinct, or clear. See examples of DEFINITION used in a sentence.
https://www.oxfordlearnersdictionaries.com/definition/english
Find meanings and definitions of words with OALD, the world's bestselling dictionary for learners of English. Access extra resources and practice with iSpeaker, iWriter and My Word Lists.
https://www.collinsdictionary.com/
Collins is a major publisher of Educational, Language and Geographic content, and has been publishing innovative, inspiring and informative books for over 200 years. Find definitions, meanings, synonyms, pronunciations, translations, origin and examples for over 1 million words in English and other languages.
https://dictionary.cambridge.org/dictionary/english/
Find clear and audio pronunciations of words, phrases, and idioms in British and American English from three Cambridge dictionaries. Browse the English Dictionary by alphabet or index, or search by popular terms.
https://www.thefreedictionary.com/
The Free Dictionary offers comprehensive and free access to dictionaries, thesaurus, encyclopedia, and other language resources in English and other languages. You can also customize your homepage, play word games, join forums, and learn new words and phrases.
https://www.oed.com/
The OED is the definitive record of the English language, featuring 600,000 words, 3 million quotations, and over 1,000 years of English. Explore the meaning, history, and usage of over 500,000 words and phrases across the English-speaking world.
https://www.dictionary.com/browse/online-dictionary
Online dictionary definition: a dictionary that is available on the internet. Online dictionaries like Dictionary.com offer immediate, direct access through large databases to a word's spelling and meanings, plus a host of ancillary information, including its variant spellings, pronunciation, inflected forms, origin, and derived forms, as well as supplementary notes about how the word is used. .
https://www.oxfordlearnersdictionaries.com/definition/english/dictionary
Learn the meaning, pronunciation and usage of the word dictionary, a book or electronic resource that lists and explains words. Find out how to use dictionary in different contexts and topics, such as slang, mathematics and medicine.
https://www.vocabulary.com/dictionary/
amp: 1 n the basic unit of electric current adopted under the Systeme International d'Unites "a typical household circuit carries 15 to 50 amps " Synonyms: A , ampere Type of: current unit a measure of the amount of electric charge flowing past a circuit point at a specific time
https://dictionary.cambridge.org/us/dictionary/english/
Find clear and audio pronunciations of words, phrases, and idioms in British and American English from three popular Cambridge dictionaries. Browse the English Dictionary by alphabet, index, or word of the day, and learn new words with examples and synonyms.
https://dictionary.cambridge.org/us/dictionary/english/dictionary
Learn the meaning of dictionary as a book, an electronic product, or a specialized list of words. See how to use dictionary in sentences and find synonyms, collocations, and translations.
https://www.thesaurus.com/
Thesaurus.com is the world's largest and most trusted online thesaurus for 25+ years. Find synonyms, antonyms, word games, quizzes, and more to improve your vocabulary and language skills.