The Collaborative International Dictionary
Allantoidal
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
allantoidal
a. (context anatomy English) Of or relating to the allantois.