Abruption: A sudden breaking off or away. Abruption of the placenta (abruptio placentae) is the premature separation of the placenta from the wall of the uterus, a potentially very serious situation for the mother and baby. SLIDESHOW Conception: The Amazing Journey from Egg to Embryo See Slideshow From Women's Health Resources Dental Care During Pregnancy Featured Centers Good and Bad Foods for PsoriasisVideo: Getting Personal on Life With MS Health Solutions From Our Sponsors Shot-Free MS Treatment Your Child and COVID-19