Archimedes' principle: Meaning and Definition of

Ar'chime'des' prin'ciple

Pronunciation: [key]
— Physics. Physics.
  1. the law that a body immersed in a fluid is buoyed up by a forceequal to the weight of the fluid displaced by the body.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.