[ok-si-deys, -deyz]
noun Biochemistry.
  1. any of a class of oxidoreductases that catalyze the oxidation of a substrate by molecular oxygen with the formation, in most cases, of hydrogen peroxide.

Origin of oxidase

First recorded in 1895–1900; oxide + -ase
Related formsox·i·da·sic [ok-si-dey-sik, -zik] /ˌɒk sɪˈdeɪ sɪk, -zɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for oxidase


  1. any of a group of enzymes that bring about biological oxidation
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

oxidase in Medicine


[ŏksĭ-dās′, -dāz′]
  1. Any of a group of enzymes that catalyze oxidation, especially an enzyme that reacts with molecular oxygen to catalyze the oxidation of a substrate.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.