1) Medical terminology 2) Severe prolapse of an organ 
Procidentia is a medical term which has a similar meaning to prolapse, the falling down of an organ from its normal anatomical position. It normally refers to uterine prolapse, but it may also refer to rectal prolapse. From the Latin procidere - to fall forward. N.B. Some gynecologists only use the term procidentia to refer to the 3rd degree of ut...
• (n.) A falling down; a prolapsus.
(pro″sĭ-den´shә) prolapse (def. 1).
Type: Term Pronunciation: prō′si-den′shē-ă Definitions: 1. A sinking down or prolapse of any organ or part; usually related to prolapse of the uterus.
severe prolapse of an organ