An enzyme that catalyzes oxidation-reduction

WordNet Word definitions in WordNet
n. an enzyme that catalyzes oxidation-reduction

Wiktionary Word definitions in Wiktionary
n. (context enzyme English) Any enzyme that catalyzes an oxidation-reduction (redox) reaction.

Wikipedia Word definitions in Wikipedia
In biochemistry , an oxidoreductase is an enzyme that catalyzes the transfer of electrons from one molecule, the reductant , also called the electron donor , to another, the oxidant , also called the electron acceptor . This group of enzymes usually utilizes ...