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placenta previa Syllabification: pla·cen·ta pre·vi·a
Pronunciation: /pləˌsentə ˈprēvēə/
(British placenta praevia)

Definition of placenta previa in English:


A condition in which the placenta partially or wholly blocks the neck of the uterus, thus interfering with normal delivery of a baby.
Example sentences
  • As with placental abruption, placenta previa can result in the birth of a premature baby.
  • We sent questionnaires to the 220 clinical tutors of the Royal College of Obstetricians and Gynaecologists in England and Wales to survey the antenatal management of asymptomatic placenta praevia.
  • The diagnosis of placenta previa is very common in the second trimester, but more than 95% of these do not have placenta previa at delivery.


Early 19th century: from placenta and Latin praevia 'going before'.

Definition of placenta previa in:
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