Main Entry: ab·rup·tio pla·cen·tae Pronunciation: &-"br&p-shE-"O-pl&-'sent-(")E, -tE-"O- Function: noun Inflected Form: pluralabruptio pla·cen·ta·rum/-"plas-&n-'tar-&m, -'tär-/orab·rup·ti·o·nesplacentarum/-shE-"O-(")nEz-, -tE-"O-"nAs-/ : premature detachment of the placenta from the wall of the uterus called also ablatio placentae