tyrosinase

[ tahy-roh-si-neys, -neyz, tir-oh- ]
/ ˈtaɪ roʊ sɪˌneɪs, -ˌneɪz, ˈtɪr oʊ- /

noun Biochemistry.

an oxidizing enzyme, occurring in plant and animal tissues, that catalyzes the aerobic oxidation of tyrosine into melanin and other pigments.

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Origin of tyrosinase

First recorded in 1895–1900; tyrosine + -ase
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for tyrosinase

tyrosinase
/ (ˌtaɪrəʊsɪˈneɪz, ˌtɪrəʊ-) /

noun

an enzyme occurring in many organisms that is a catalyst in the conversion of tyrosine to the pigment melanin; inactivity of this enzyme results in albinism
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012