The Collaborative International Dictionary
Allantoin
Allantoin \Al*lan"to*in\, n. (Chem.) A crystalline, transparent, colorless substance found in the allantoic liquid of the fetal calf; -- formerly called allantoic acid and amniotic acid. [1913 Webster] ||
Wiktionary
allantoin
n. (context biochemistry English) A diureide of glyoxylic acid, used in various pharmaceutical and cosmetic products; or a derivative of this compound
Wikipedia
Allantoin
Allantoin is a chemical compound with formula CHNO. It is also called 5-ureidohydantoin or glyoxyldiureide. It is a diureide of glyoxylic acid.
Usage examples of "allantoin".
Puffballs are fungi, the only fungi the Indians ever trusted-the spores clot the blood-comfrey has allantoin in it.