allantoides

Variant of allantois

allantois definition

al·lan·tois (ə lan′tō is)

noun pl. allantoides al′·lan·to′i·des′ (al′ən tō′ə dēz′)

a membranous pouch with a rich blood supply in the embryos of birds, reptiles, and mammals: it is an organ of respiration and excretion for embryonic birds and reptiles: in mammals it helps form the placenta

Etymology: ModL < Gr allantoeidēs, sausage-shaped < allas, sausage (prob. < dial. allē, garlic, via Oscan *allo < L alium, allium) + -eidēs, -oid

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.