momentum Hear it!

momentum definition

mo·men·tum (mō men′təm, mə-)

noun pl. momentums -·tums or momenta -·ta (-tə)

  1. the impetus of a moving object
  2. strength or force that keeps growing a campaign that gained momentum
  3. Physics, Mech. the product of the mass of a particle, body, etc. and its velocity: abbrev. M

Etymology: ModL < L: see moment

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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