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
tyrosinase in American English
(ˈtaɪroʊsɪnˌeɪs; ˈtɪroʊsɪnˌeɪs; taɪˈrɑsɪnˌeɪs)
noun
an enzyme, found in plants and animals, that catalyzes the oxidation of the amino acid tyrosine and is involved in the formation of the dark pigment melanin