The meaning of DEFINE is to determine or identify the essential qualities or meaning of. How to use define in a sentence.

DEFINE definition: to state or set forth the meaning of (a word, phrase, etc.). See examples of define used in a sentence.

DEFINE definition: 1. to say what the meaning of something, especially a word, is: 2. to explain and describe the…. Learn more.

DEFINITION definition: the act of defining, or of making something definite, distinct, or clear. See examples of definition used in a sentence.

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Find 124 different ways to say DEFINE, along with antonyms, related words, and example sentences at Thesaurus.com.

Nov 1, 2025 · To describe, explain, or make definite and clear; used to request the listener or other person to elaborate or explain more clearly his or her intended meaning of a word or expression. …

1520s, "not precise, vague," from Latin indefinitus "indefinite," from in- "not, opposite of, without" (see in- (1)) + definitus, past participle of definire (see define).

de•fine /dɪˈfaɪn/ v. [ ~ + obj], -fined, -fin•ing. to set forth the meaning of: His job was to define new words that were not yet in the dictionaries. describe: We had to define what our problems were before we …