What does "hydantoin" mean?

The heterocycle imidazolidine-2,4-dione derived from urea and glycolic acid; any of its many derivatives

Hydantoin

Common synonyms include: chemical, derivative related, diphenylhydantoin, heterocyclic, hydantoin derivative, hydantoin-based compound.

noun

noun ·Rare ·Advanced level

Noun

1
The heterocycle imidazolidine-2,4-dione derived from urea and glycolic acid; any of its many derivatives
2
any of a group of anticonvulsant drugs used in treating epilepsy wordnet

From hydrogenation and allantoin.