/ Dictionary / Index G gravitational constant: Meaning and Definition of Find definitions for: grav'ita'tional con'stant Pronunciation: [key] — Physics. Physics. constant of gravitation. See under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gravitational collapse gravitational field Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language