tyrosine

[tahy-ruh-seen, -sin, tir-uh-] /ˈtaɪ rəˌsin, -sɪn, ˈtɪr ə-/
noun, Biochemistry
1.
a crystalline amino acid, HOC 6 H 4 CH 2 CH(NH 2)COOH, abundant in ripe cheese, that acts as a precursor of norepinephrine and dopamine. Symbol: Y.
Abbreviation: Tyr;
Origin
1855-60; < Greek tȳrós cheese + -ine2
Examples from the web for tyrosine
  • tyrosine kinase inhibitor drugs block proteins involved in tumor cell growth and production.
British Dictionary definitions for tyrosine

tyrosine

/ˈtaɪrəˌsiːn; -sɪn; ˈtɪrə-/
noun
1.
an aromatic nonessential amino acid; a component of proteins. It is a metabolic precursor of thyroxine, the pigment melanin, and other biologically important compounds
Word Origin
C19: from Greek turos cheese + -ine²
Word Origin and History for tyrosine
n.

amino acid, 1857, coined 1846 by German chemist Baron von Justus Liebig (1802-1873), who had first obtained it a year before, from Greek tyros "cheese" + chemical suffix -ine (2). So called because it was easily obtained from old cheese.

tyrosine in Medicine

tyrosine ty·ro·sine (tī'rə-sēn')
n.
Abbr. Tyr
A white crystalline amino acid that is derived from the hydrolysis of proteins such as casein and is a precursor of epinephrine, thyroxine, and melanin.

tyrosine in Science
tyrosine
  (tī'rə-sēn')   
A nonessential amino acid. Chemical formula: C9H11NO3. See more at amino acid.