Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
essential amino acid | Yes | No | No | No |
arginine | Yes | No | No | No |
essential amino acid (noun) | arginine (noun) |
---|---|
an amino acid that is required by animals but that they cannot synthesize; must be supplied in the diet | a bitter tasting amino acid found in proteins and necessary for nutrition; its absence from the diet leads to a reduced production of spermatozoa |