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  1. English Dictionary, Thesaurus, And Word Finder Software. Get WordWeb to look up words in any program; also links to Wikipedia

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  1. The historical English dictionary. An unsurpassed guide for researchers in any discipline to the meaning, history, and usage of over 500,000 words and phrases across the English-speaking world.

  2. 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.

  3. The world's bestselling advanced-level dictionary for learners of English. Since 1948, over 100 million English language learners have used OALD to develop their English skills for work and study. Now in its tenth edition, OALD builds English vocabulary better than ever before and leads the way to more confident, successful communication in English.

  4. 3 days ago · Free online dictionary, thesaurus and reference materials. Collins is a major publisher of Educational, Language and Geographic content, and has been publishing innovative, inspiring and informative books for over 200 years. Collins online dictionary and reference resources draw on the wealth of reliable and authoritative information about ...

  5. English spelling dictionary. Please enter a word. "Fantastic - the most relevant material/resource ever seen for both dyslexia and teaching spelling rules." Use our dictionary to check the spelling definitions of words. You can translate the dictionary words into your native language..

  6. The most popular dictionary and thesaurus. Definitions & meanings of words in English with examples, synonyms, pronunciations and translations.

  7. DICTIONARY definition: 1. a book that contains a list of words in alphabetical order and explains their meanings, or gives…. Learn more.

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