/ Dictionary / Index P protuberancy: Meaning and Definition of Find definitions for: pro•tu•ber•an•cy Pronunciation: (prō-t'bur-un-sē, -ty'-, pru-), [key] — pl. -cies. protuberance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. protuberance protuberant Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language