in·​stan·​ta·​neous | \ ˌin(t)-stən-ˈtā-nē-əs How to pronounce instantaneous (audio) , -nyəs \

Definition of instantaneous

1 : done, occurring, or acting without any perceptible duration of time death was instantaneous
2 : done without any delay being purposely introduced took instantaneous corrective action
3 : occurring or present at a particular instant instantaneous velocity

Other Words from instantaneous

instantaneity \ ˌin-​ˌstan-​tə-​ˈnē-​ə-​tē How to pronounce instantaneous (audio) , ˌin(t)-​stən-​tə-​ˈnē-​ \ noun
instantaneously \ ˌin(t)-​stən-​ˈtā-​nē-​əs-​lē How to pronounce instantaneous (audio) , -​nyəs-​lē \ adverb
instantaneousness noun

Examples of instantaneous in a Sentence

We got an almost instantaneous response from the company. the thunder following the flash of lightning was nearly instantaneous
Recent Examples on the Web Flowing water can produce reliable and instantaneous power in a way that solar or wind energy cannot, and its output helps the grid manage usage spikes, like those that occur routinely in the evenings. Nick Bowlin, Outside Online, 4 May 2022 Backing up a bit, Autonomous Ultra Instinct is an ability that allows the user an automatic and instantaneous reaction to any threat. Ollie Barder, Forbes, 10 Apr. 2022 The realization that your trajectory in life has changed is instantaneous. Rodger Dean Duncan, Forbes, 3 May 2022 Yet Titanic's sinking was not instantaneous, and in her dying moments fateful choices were made. People Staff,, 15 Apr. 2022 Tuesday, Aaron Rodgers finally revealed his decision to return to the Green Bay Packers – not really a surprise – but the ripple effects were almost instantaneous. Nate Davis, USA TODAY, 10 Mar. 2022 When the two suburbanites met the sophisticated city kid in 2013, the bond was instantaneous. Simon Vozick-levinson, Rolling Stone, 16 Mar. 2022 Jaffrey and his team aim for Skipp to be home renovations in real time: an instantaneous phone application that scans the room, then offers configurations and design options in mere minutes. Stephanie Cain, Fortune, 1 Mar. 2022 Its effect on them was instantaneous flight at the top of their speed in all directions from the scene of the conflict. Dan Mclaughlin, National Review, 21 Feb. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'instantaneous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of instantaneous

1651, in the meaning defined at sense 1

History and Etymology for instantaneous

Medieval Latin instantaneus, from instant-, instans, noun

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Time Traveler for instantaneous

Time Traveler

The first known use of instantaneous was in 1651

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Dictionary Entries Near instantaneous



instantaneous exposure

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Statistics for instantaneous

Last Updated

17 May 2022

Cite this Entry

“Instantaneous.” Dictionary, Merriam-Webster, Accessed 26 May. 2022.

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More Definitions for instantaneous


in·​stan·​ta·​neous | \ ˌin-stən-ˈtā-nē-əs How to pronounce instantaneous (audio) \

Kids Definition of instantaneous

: happening or done very quickly : happening in an instant an instantaneous reply

Other Words from instantaneous

instantaneously adverb

More from Merriam-Webster on instantaneous

Nglish: Translation of instantaneous for Spanish Speakers

Britannica English: Translation of instantaneous for Arabic Speakers


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