Instantaneous meaning

ĭnstən-tānē-əs
The definition of instantaneous is something that happens right away.

If you ask for water and water immediately appears that very second, this is an example of something instantaneous.

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Done or made as quickly or directly as possible.

An instantaneous reply to my letter.

adjective
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Occurring or completed without perceptible delay.

Relief was instantaneous.

adjective
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Done or made without delay; immediate.

An instantaneous reply.

adjective
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Present or occurring at a specific instant.

Instantaneous velocity; instantaneous pressure.

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Done, made, or happening in an instant.
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Existing at a particular instant.
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Occurring, arising, or functioning without any delay; happening within an imperceptibly brief period of time.
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Origin of instantaneous

  • From Medieval Latin īnstantāneus from Latin īnstāns īnstant- present instant

    From American Heritage Dictionary of the English Language, 5th Edition

  • New Latin, 17th century

    From Wiktionary