/ Dictionary / Index A angular acceleration: Meaning and Definition of Find definitions for: an'gular accelera'tion Pronunciation: [key] — Physics. Physics. the time rate of change of angular velocity of a rotating body. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. angular angular diameter Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language