Meaning of oxazolone | Babel Free

Definitions

1. A five-membered heterocycle containing three carbon atoms, one nitrogen atom, one oxygen atom, a carbonyl group and a double bond
   countable, uncountable
2. A chemical allergen, 4-ethoxymethylene-2-phenyloxazol-5-one, used for immunological experiments, particularly for experiments on delayed type hypersensitivity.
   countable, uncountable

CEFR level