amniotic sac

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Related to Birth sac: yolk sac
  • noun

Synonyms for amniotic sac

thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)

References in periodicals archive ?
Without separate placentas and birth sacs they are at risk of harming each other.
Oh well, you should give Baby a shot of antibiotics anyway, and take the birth sac out of her pen, and.
Mark added: "When the medics told us our twins shared the same birth sac we didn't know what we were letting ourselves in for.
Mark said: "When the medics told us our twins shared the same birth sac we didn't know what we were letting ourselves in for.
Emma Canning, aged 36, had Christmas babies Hannah and Sophie, who were monoamniotic twins - sharing the same birth sac and placenta.