ALLANTOIS
Scrabble letter values: A1L1L1A1N1T1O1I1S1 = 9
Definition
- noun the vascular fetal membrane that lies below the chorion and develops from the hindgut in many embryonic higher vertebrates (reptiles, birds and mammals).
Scrabble letter values: A1L1L1A1N1T1O1I1S1 = 9