Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
essential amino acid | Yes | No | No | No |
threonine | Yes | No | No | No |
essential amino acid (noun) | threonine (noun) |
---|---|
an amino acid that is required by animals but that they cannot synthesize; must be supplied in the diet | a colorless crystalline amino acid found in protein; occurs in the hydrolysates of certain proteins; an essential component of human nutrition |