The urinary excretion of ketonic metabolites of tyrosine, such as p-hydroxyphenylpyruvic acid. ... (05 Mar 2000) ... 
Type: Term Pronunciation: tī′rō-kē′tō-nyū′rē-ă Definitions: 1. The urinary excretion of ketonic metabolites of tyrosine, such as p-hydroxyphenylpyruvic acid.