/ Dictionary / Index K kinetic energy: Meaning and Definition of Find definitions for: kinet'ic en'ergy Pronunciation: [key] — Physics. Physics. the energy of a body or a system with respect to the motion of the body or of the particles in the system. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. kinetic art kineticism Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language