The meaning of INSTANTANEOUS is done, occurring, or acting without any perceptible duration of time. How to use instantaneous in a sentence.

INSTANTANEOUS definition: 1. happening immediately, without any delay: 2. happening immediately, without any delay: 3…. Learn more.

INSTANTANEOUS definition: occurring, done, or completed in an instant. See examples of instantaneous used in a sentence.

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

1. Occurring or completed without perceptible delay: Relief was instantaneous. 2. Done or made as quickly or directly as possible: an instantaneous reply to my letter. 3. Present or occurring …

occurring, done, or completed in an instant: an instantaneous response. existing at or pertaining to a particular instant: the instantaneous position of the rocket.

Dec 14, 2025 · instantaneous (not comparable) Occurring, arising, or functioning without any delay; happening within an imperceptibly brief period of time. [from 17th c.] synonyms …

Something that is instantaneous happens immediately and very quickly. Death was instantaneous because both bullets hit the heart.

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 …

Synonyms for INSTANTANEOUS: immediate, instant, rapid, split-second, swift, summary, straightaway, quick; Antonyms of INSTANTANEOUS: slow, prolonged, sluggish, protracted, …