prolapse

UK: /ˈprəʊlæps/ US: (n. prō laps′, prō′laps; v. prō laps′)

Inflections of 'prolapse' (v): (⇒ conjugate)

prolapses

v 3rd person singular

prolapsing

v pres p

prolapsed

v past

prolapsed

v past p

WordReference Random House Unabridged Dictionary of American English © 2025

pro•lapse  (n. prō laps′, prō′laps;v. prō laps′), n., v., -lapsed, -laps•ing. 
n. 

1. Pathology a falling down of an organ or part, as the uterus, from its normal position.

v.i. 

2. to fall or slip down or out of place.

• Late Latin prōlāpsus a slipping forth. See pro-¹, lapse
• 1555–65

Collins Concise English Dictionary © HarperCollins Publishers::

prolapse / ˈprəʊlæps prəʊˈlæps/ noun

1. Also called: prolapsus / prəʊˈlæpsəs/ the sinking or falling down of an organ or part, esp the womb
   Compare proptosis

verb (intransitive)

1. (of an organ, etc) to sink from its normal position

Etymology: 17th Century: from Latin prōlābi to slide along, from pro-¹ + lābī to slip