adjective Etymology: Medieval Latin instantaneus, from instant-, instans, noun Date: 1651 1. done, occurring, or acting without any perceptible duration of time <
death was instantaneous
2. done without any delay being purposely introduced <
took instantaneous action to correct the abuse
3. occurring or present at a particular instant <
instantaneous velocity
instantaneity nouninstantaneously adverbinstantaneousness noun

New Collegiate Dictionary. 2001.


Look at other dictionaries:

  • Instantaneous — In stan*ta ne*ous, a. [Cf. F. instantan[ e].] [1913 Webster] 1. Done or occurring in an instant, or without any perceptible duration of time; as, the passage of electricity appears to be instantaneous. [1913 Webster] His reason saw With… …   The Collaborative International Dictionary of English

  • Instantaneous — means appearing on the moment, example: *Instantaneous phase *Instantaneous stability *instantaneous power …   Wikipedia

  • instantaneous — [in΄stən tā′nē əs] adj. [ML instantaneus] 1. done, made, or happening in an instant 2. done or made without delay; immediate [an instantaneous reply] 3. existing at a particular instant instantaneously adv. instantaneousness n …   English World dictionary

  • instantaneous — I adjective abrupt, expeditious, hasty, hurried, immediate, instant, occurring in an instant, praesens, prompt, quick, rapid, simultaneous, speedy, subitus, swift, without delay, without perceptible time lapse II index immediate …   Law dictionary

  • instantaneous — 1640s (implied in instantaneously), formed in English from M.L. *instantaneus, from instantem (see INSTANT (Cf. instant) (n.)) on model of spontaneous, simultaneous. Related: Instantaneousness …   Etymology dictionary

  • instantaneous — [adj] immediate direct, fast, hair trigger*, in a flash*, instant, momentary, quick, rapid, spontaneous, transitory; concept 820 Ant. delayed, eventual, late, later …   New thesaurus

  • instantaneous — ► ADJECTIVE 1) occurring or done instantly. 2) Physics existing or measured at a particular instant. DERIVATIVES instantaneity noun instantaneously adverb instantaneousness noun …   English terms dictionary

  • instantaneous — instantaneity /in stan tn ee i tee, in steuhn teuh nee /, instantaneousness, n. instantaneously, adv. /in steuhn tay nee euhs/, adj. 1. occurring, done, or completed in an instant: an instantaneous response. 2. existing at or pertaining to a… …   Universalium

  • instantaneous — [[t]ɪ̱nstənte͟ɪniəs[/t]] ADJ GRADED Something that is instantaneous happens immediately and very quickly. Death was not instantaneous because none of the bullets hit the heart. Syn: immediate Derived words: instantaneously ADV ADV with v Airbags… …   English dictionary

  • instantaneous — /ɪnstənˈteɪniəs / (say instuhn tayneeuhs) adjective 1. occurring, done, or completed in an instant: an instantaneous explosion. 2. existing at or relating to a particular instant: the instantaneous position of something. {Medieval Latin… …   Australian English dictionary

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