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instantaneous Syllabification: in·stan·ta·ne·ous
Pronunciation: /ˌinstənˈtānēəs/

Definition of instantaneous in English:


1Occurring or done in an instant or instantly: her reaction was almost instantaneous modern methods of instantaneous communication
More example sentences
  • This death would have been rapid, almost instantaneous.
  • Yet mathematicians were able to revolutionize the subject by inventing a whole new language of mathematics which was capable of expressing instantaneous change: that language was the calculus.
  • Once airborne I could immediately feel the aircraft's sensitivity because every change in height and direction is instantaneous.
informal snappy, pretty damn quick, PDQ
literary fleet
2 Physics Existing or measured at a particular instant: measurement of the instantaneous velocity
More example sentences
  • Mass, instantaneous velocity, acceleration, magnetic forces, and energy puzzled them much more.
  • Also in line with experimental measurements, the examination of instantaneous velocity of simulated beads shows that pause time decreases with increasing wall shear stress.
  • Owing to the intermittent nature of turbulence, we related individual predation events to local, instantaneous relative velocities instead of bulk averages.


Mid 17th century: from medieval Latin instantaneus, from Latin instant- 'being at hand' (from the verb instare), on the pattern of ecclesiastical Latin momentaneus.



Example sentences
  • They discovered there was a gap in the market for an optic which could deliver either a single or a double shot, instantaneously.
  • In nearly all the videos, they are instantaneously cut down by a few short bursts of aimed rifle and machine gun fire.
  • A man always on the scene, never, never more than a step away from instantaneously covering a story.


Example sentences
  • What he was hankering after had to approximate the instantaneousness of painting - the fact that paintings are seen all at once, in a resonant ‘now’ - and simultaneously had to evoke a particular medium of painting.
  • These traits are: collective autism, bombast of presentation to the point of unreality, moral narcissism, a chronic lack of sober foresight, and total immersion in instantaneousness.
  • All this demands from the dancer openness and vulnerability to the instantaneousness of the moment, much more than in the process of a choreographed performance.

Words that rhyme with instantaneous

contemporaneous, cutaneous, extemporaneous, extraneous, miscellaneous, Pausanias, porcellaneous, simultaneous, spontaneous, subcutaneous

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