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Allantois

nounid 6644·updated May 18, 2026
verified

the vascular fetal membrane that lies below the chorion and develops from the hindgut in many embryonic higher vertebrates (reptiles, birds and mammals)

Classifications

Entity Type

Unknownauthoritativeglossary_import_default_pending_classifier

Sensitivity

unclassified

Information Class

unclassified

Variants

possessive
Allantois's
pluralpossessive
Allantoises'

Framework definitions

Wordset Dictionary1 senseview framework →
§1
the vascular fetal membrane that lies below the chorion and develops from the hindgut in many embryonic higher vertebrates (reptiles, birds and mammals)

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