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inertial mass: Meaning and Definition of

iner'tial mass'

Pronunciation: [key]
— Physics. Physics.
  1. the mass of a body as determined by the second law of motion from the acceleration of the body when it is subjected to a force that is not due to gravity.
  2. the measure of the property of inertia. Cf. Eötvös experiment, inertia (def. 2a),
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
inertial guidance inertial system
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