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Instantaneous vs Simultaneous - What's the difference?

instantaneous | simultaneous |

As adjectives the difference between instantaneous and simultaneous

is that instantaneous is occurring, arising, or functioning without any delay; happening within an imperceptibly brief period of time while simultaneous is occurring or transpiring at the same time.

instantaneous

English

Adjective

(-)
  • Occurring]], [[arise, arising, or functioning without any delay; happening within an imperceptibly brief period of time.
  • * 1631 , William Twisse, A discovery of D. Iacksons vanitie , ch. 6, p. 223,
    • This instantaneous motion is supposed by you, to be infinitely swift.
  • * 1766 , , The Vicar of Wakefield , ch. 14.
    • However, no lovers in romance ever cemented a more instantaneous friendship.
  • * 1813 , , Pride and Prejudice , ch. 57,
    • The colour now rushed into Elizabeth's cheeks in the instantaneous conviction of its being a letter from the nephew.
  • * 1907 , , The Secret Agent , ch. 4,
    • It's the principle of the pneumatic instantaneous shutter for a camera lens.
  • * 2007 , Spector jury given graphic account of actress 'murder' Times Online , London, 30 May (retrieved 13 July 2007),
    • He said that the bullet went through her head, severed her spine and death would have been almost instantaneous .

    Synonyms

    * instant

    Derived terms

    * instantaneously * instantaneity

    References

    * * * * * " instantaneous" in Cambridge Advanced Learner's Dictionary (Cambridge University Press, 2007) * " instantaneous" in Compact Oxford English Dictionary , (Oxford University Press, 2007) * Oxford English Dictionary , second edition (1989) English words suffixed with -aneous

    simultaneous

    English

    Adjective

    (-)
  • Occurring]] or [[transpire, transpiring at the same time.
  • *
    • As with the Lejeuneaceae, this pattern of massive speciation appears to be correlated with the Cretaceous explosion of the angiosperms and the simultaneous creation of a host of new microenvironments, differing in humidity, light intensity, texture, etc.

    Derived terms

    * simultaneously * simultaneity