Any of many nitrogen-containing organic compounds which are found in some plants and in the urine of some mammals. Allantoin is used to treat wounds and ulcers and as a conditioning additive in shampoos and other hair and skin preparations.

From the BioTech Dictionary at For further information see the BioTech homenode.

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.


© Webster 1913.

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