instantaneous definition | Dictionary.com

in⋅stan⋅ta⋅ne⋅ous

[in-stuh

n-tey-nee-uh

–adjective

1.	occurring, done, or completed in an instant: an instantaneous response.

2.	existing at or pertaining to a particular instant: the instantaneous position of the rocket.

Origin:
1645–55; < ML instantāneus. See instant, -an, -eous

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.

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Language Translation for : instantaneous

Spanish:

instantáneo,

German:

augenblicklich,

Japanese:

即時の

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in·stan·ta·ne·ous (ĭn'stən-tā'nē-əs) Pronunciation Key
adj.

Occurring or completed without perceptible delay: Relief was instantaneous.
Done or made as quickly or directly as possible: an instantaneous reply to my letter.
Present or occurring at a specific instant: instantaneous velocity; instantaneous pressure.

[From Medieval Latin īnstantāneus, from Latin īnstāns, īnstant-, present; see instant.]
in·stan'ta·ne'i·ty (ĭn-stān'tə-nē'ĭ-tē, ĭn'stən-) n., in'stan·ta'ne·ous·ly adv., in'stan·ta'ne·ous·ness n.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.

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instantaneous
adjective
occurring with no delay; "relief was instantaneous"; "instant gratification"

WordNet® 3.0, © 2006 by Princeton University.

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Instantaneous

In`stan*ta"ne*ous\, a. [Cf. F. instantan['e].]

1. Done or occurring in an instant, or without any perceptible duration of time; as, the passage of electricity appears to be instantaneous.

His reason saw With instantaneous view, the truth of things. --Thomson.

2. At or during a given instant; as, instantaneous acceleration, velocity, etc.

Instantaneous center of rotation (Kinematics), in a plane or in a plane figure which has motions both of translation and of rotation in the plane, is the point which for the instant is at rest.

Instantaneous axis of rotation (Kinematics), in a body which has motions both of translation and rotation, is a line, which is supposed to be rigidly united with the body, and which for the instant is at rest. The motion of the body is for the instant simply that of rotation about the instantaneous axis. -- In`stan*ta"ne*ous*ly, adv. -- In`stan*ta"ne*ous*ness, n.

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