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placenta praevia Line breaks: pla|centa prae|via
Pronunciation: /ˈpriːvɪə/
(US placenta previa)

Definition of placenta praevia in English:


[mass noun] Medicine
A condition in which the placenta partially or wholly blocks the neck of the uterus, so 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', feminine of praevius.

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