Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
methionine | Yes | No | No | No |
essential amino acid | Yes | No | No | No |
methionine (noun) | essential amino acid (noun) |
---|---|
a crystalline amino acid containing sulfur; found in most proteins and essential for nutrition | an amino acid that is required by animals but that they cannot synthesize; must be supplied in the diet |