/ Dictionary / Index A angular momentum: Meaning and Definition of Find definitions for: an'gular momen'tum Pronunciation: [key] — Physics. Physics. the product of the moment of inertia of a body about an axis and its angular velocity with respect to the same axis. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. angular measure angular velocity Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language