instantaneous

adjective
in·stan·ta·neous | \ˌin(t)-stən-ˈtā-nē-əs, -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

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Other Words from instantaneous

instantaneity \ˌin-ˌstan-tə-ˈnē-ə-tē, ˌin(t)-stən-tə-ˈnē- \ noun
instantaneously \ˌin(t)-stən-ˈtā-nē-əs-lē, -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

Semi-autonomous driving systems don’t possess the instantaneous flexible decision-making skills based on the intuition that humans have. Chuck Tannert, Popular Mechanics, "The Way We Talk About Self-Driving Cars Is Going To Get People Killed," 11 Apr. 2018 The approach assumes that instantaneous reactions require no reflection; as a result, unconscious parts of the personality come to the fore. Steve Ayan, Scientific American, "10 Things You Don’t Know About Yourself," 15 May 2018 While this disruption of the status quo is worth immense admiration, the instantaneous meme-ifying of Okoumou’s iconic climb immediately rendered her superhuman in the public arena. Jenn M. Jackson, Teen Vogue, "Black Women Are Not Your Superheroes," 9 July 2018 Though applications like Google Translate are common and instantaneous tools for translating, Gabantxo says literary translation is an art with nuance and context that a computer cannot produce. Savannah Eadens, chicagotribune.com, "Translators' group brings international literature to Chicago," 27 June 2018 Jed Lowrie shot the final to Altuve, who began a 6-4-3 double play to lessen the instantaneous tension McCullers encountered. Chandler Rome, Houston Chronicle, "Evan Gattis' strong night leads Astros to victory against Athletics," 13 June 2018 Star Stable is by nature without territorial restraints and is a unique platform for debuting JoJo's new single to an instantaneous and globally relevant audience of tween/teen girls. Cathy Applefeld Olson, Billboard, "JoJo Siwa to Release New Single 'Every Girl's a Super Girl' Exclusively Via 'Star Stable'," 4 Apr. 2018 Her connection to Basquiat’s work was instantaneous and serious. Stephen Metcalf, The Atlantic, "Jean-Michel Basquiat Is Still an Enigma," 24 June 2018 American Solar and Roofing encourages customers to use a device that allows them to monitor the instantaneous demand of their home, allowing them to avoid setting a high demand fee for the month. Ryan Randazzo, azcentral, "Should you install solar on your home? 10 key considerations," 4 July 2018

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.

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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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Last Updated

6 Sep 2018

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Time Traveler for instantaneous

The first known use of instantaneous was in 1651

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More Definitions for instantaneous

instantaneous

adjective

English Language Learners Definition of instantaneous

: happening very quickly : happening in an instant

instantaneous

adjective
in·stan·ta·neous | \ˌin-stən-ˈtā-nē-əs \

Kids Definition of instantaneous

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

Other Words from instantaneous

instantaneously adverb

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Comments on instantaneous

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