Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of allantois is as below...

Allantoic :: Allantoic (a.) Pertaining to, or contained in, the allantois..

Anallantoidea :: Anallantoidea (n. pl.) The division of Vertebrata in which no allantois is developed. It includes amphibians, fishes, and lower forms..

Allantoidal :: Allantoidal (a.) Of or pertaining to the allantois.

Anallantoic :: Anallantoic (a.) Without, or not developing, an allantois..

Allantoidea :: Allantoidea (n. pl.) The division of Vertebrata in which the embryo develops an allantois. It includes reptiles, birds, and mammals..

Allantois :: Allantois (n.) Alt. of Allantoi.

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