<obstetrics> This is the premature separation of the placenta, i.e. Separation of the placenta from the site of implantation on the uterus before the delivery of the foetus. It is a life threatening condition for the foetus and occurs about 1 in 500 to 750 deliveries. ... (09 Oct 1997) ... 
Type: Term Pronunciation: ab-rŭp′shē-ō pla-sen′tē Definitions: 1. Premature detachment of a normally situated placenta.
[n] - a disorder of pregnancy in which the placenta prematurely separates from the wall of the uterus
noun a disorder of pregnancy in which the placenta prematurely separates from the wall of the uterus