allantoin
Al*lan"to*in, n. (Chem.) Defn: A crystalline, transparent, colorless substance found in the allantoic liquid of the fetal calf; -- formerly called allantoic acid and amniotic acid.
Al*lan"to*in, n. (Chem.) Defn: A crystalline, transparent, colorless substance found in the allantoic liquid of the fetal calf; -- formerly called allantoic acid and amniotic acid.