/ Dictionary / Index P prolapsus: Meaning and Definition of Find definitions for: pro•lap•sus Pronunciation: (prō-lap'sus), [key] — pl. -sus•es. prolapse. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: prolapsus (Thesaurus) prolapse prolate Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language