allantois

英 [ə'læntɔɪs] 美 [ə'læntɔɪs]

• n. 尿膜；尿囊

英英释义

Noun:

1. the vascular fetal membrane that lies below the chorion and develops from the hindgut in many embryonic higher vertebrates (reptiles, birds and mammals)

词汇搭配

• chick embryo allantois 鸡胚尿囊
• allantois chorioidea [医] 尿囊绒[毛]...