Library / English Dictionary

    ALLANTOIS

    Pronunciation (US): Play  (GB): Play

     I. (noun) 

    Sense 1

    Meaning:

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

    Classified under:

    Nouns denoting animals

    Hypernyms ("allantois" is a kind of...):

    fetal membrane (any membrane that functions for the protection or nourishment or respiration or excretion of a developing fetus)

    Domain category:

    mammal; mammalian (any warm-blooded vertebrate having the skin more or less covered with hair; young are born alive except for the small subclass of monotremes and nourished with milk)

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