In physics and the philosophy of science, instant refers to an infinitesimal interval in time, whose passage is instantaneous. In ordinary speech, an instant has been defined as "a point or very …

The meaning of INSTANT is an infinitesimal space of time; especially : a point in time separating two states. How to use instant in a sentence.

INSTANT definition: an infinitesimal or very short space of time; a moment. See examples of instant used in a sentence.

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1. an infinitesimal or very short space of time; moment. 2. the point of time now present: Come here this instant!

Definition of instant noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

INSTANT meaning: 1. happening immediately, without any delay: 2. Instant food or drink is dried, usually in the…. Learn more.