Share this entry
oxidase Syllabification: ox·i·dase
Pronunciation: /ˈäksəˌdās/

Definition of oxidase in English:


An enzyme that promotes the transfer of a hydrogen atom from a particular substrate to an oxygen molecule, forming water or hydrogen peroxide.
Example sentences
  • Polyphenol oxidase is the enzyme that makes phenolics react to form brown pigments.
  • Despite many important advances in the understanding of terminal oxidases, the mechanism by which the electron transfer events are coupled to proton translocation is unknown.
  • Briefly, plasma lactic acid is converted to pyruvate and hydrogen peroxide by lactate oxidase.


Late 19th century: from French oxydase, from oxyde 'oxide'.

Definition of oxidase in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove ads and access premium resources