Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
essential amino acid | Yes | No | No | No |
lysine | Yes | No | No | No |
essential amino acid (noun) | lysine (noun) |
---|---|
an amino acid that is required by animals but that they cannot synthesize; must be supplied in the diet | an essential amino acid found in proteins; occurs especially in gelatin and casein |