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allantoid |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Allantoid \Al*lan"toid\, Allantoidal \Al`lan*toid"al\, a. [Gr. ? shaped like a sausage; ? sausage + ? form.] (Anat.) Of or pertaining to the allantois. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Allantois \Al*lan"to*is\, Allantoid \Al*lan"toid\, ] n.. (Anat.) A membranous appendage of the embryos of mammals, birds, and reptiles, -- in mammals serving to connect the fetus with the parent; the urinary vesicle.