noun see: butter Date: 1857 a phenolic amino acid C 9 H 11 NO 3 that is a precursor of several important substances (as epinephrine and melanin)
TYROSINE
Meaning of TYROSINE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012