/ Dictionary / Index P physical pendulum: Meaning and Definition of Find definitions for: phys'ical pen'dulum Pronunciation: [key] — Physics. Physics. any apparatus consisting of a body of possibly irregular shape allowed to rotate freely about a horizontal axis on which it is pivoted (distinguished from simple pendulum). Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. physical optics physical science Related Content Daily Word Quiz: pudgy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language