The Collaborative International Dictionary
Allantoid
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.
Allantoid
Allantoid \Al*lan"toid\, Allantoidal \Al`lan*toid"al\, a. [Gr. ? shaped like a sausage; ? sausage + e'i^dos form.] (Anat.) Of or pertaining to the allantois. [1913 Webster] ||
Wiktionary
allantoid
a. (context mycology English) sausage-shaped. Often used to describe spores that are long with rounded ends. n. An allantois.
WordNet
allantoid
adj. shaped like a sausage [syn: sausage-shaped]