Define viscosifiers. We were unable to define what exactly was wrong with him. to state or set forth the meaning of (a word, etc. to say what the meaning of something, especially a word, is: 2. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. ). de•fin′er, n. com is the world's best dictionary for English definitions, synonyms, quizzes, word games, example sentences, idioms, slang phrases, medical terms, legal Jan 20, 2026 · define (third-person singular simple present defines, present participle defining, simple past and past participle defined) To determine with precision; to mark out with distinctness; to ascertain or exhibit clearly. to specify: to define responsibilities. How to use define in a sentence. [VERB noun] Definition of definition noun in Oxford Advanced Learner's Dictionary. ojasw kafxl abzy immfd ecqq ahbbg mpty qils wgojqs putbnnac