Middle English diffinicioun, borrowed from Anglo-French diffiniciun, definiciun, borrowed from Latin dēfīnītiōn-, dēfīnītiō "fixing of a boundary, precise description," from dēfīnīre "to mark the limits of, …

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

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

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to determine or fix the boundaries or extent of: to define property with stakes. to make clear the outline or form of: The roof was boldly defined against the sky.

Mar 11, 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 …

2. a. To make clear the outline or form of; delineate: gentle hills that were defined against the sky. b. To specify distinctly: define the weapons to be used in limited warfare. 3. To give form or meaning to: …

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To determine or state the extent and nature of; describe exactly. Define your duties.

define /dɪ ˈ faɪn/ verb defines; defined; defining Britannica Dictionary definition of DEFINE [+ object] 1 : to explain the meaning of (a word, phrase, etc.)