noun. an amino acid found in most proteins; a precursor of several hormones.
- aminoalkanoic acid
Sentences with tyrosine
1. Noun, singular or mass
If you have PKU you must avoid phenylalanine in your diet, and without it you cannot produce tyrosine on your own and must use supplements to meet your needs.
Athletes also take tyrosine** supplements to help improve their performance, but research does not support the benefits of this use.