Part of speech:
A membranous sac that grows out of the lower end of the alimentary canal in embryos of reptiles, birds, and mammals. In mammals, the blood vessels of the allantois develop into the blood vessels of the umbilical cord.
shaped like a sausage
Find another word for allantoid. In this page you can discover 3 synonyms, antonyms, idiomatic expressions, and related words for allantoid, like: botuliform, allantois and sausage-shaped.