oxidase

noun

ox·​i·​dase ˈäk-sə-ˌdās 

-ˌdāz

: any of various enzymes that catalyze oxidations

especially : one able to react directly with molecular oxygen

oxidasic

ˌäk-sə-ˈdā-sik 

-zik

adjective

Examples of oxidase in a Sentence

Recent Examples on the Web

These ranges closely match the wavelengths most readily absorbed by cytochrome c oxidase, a key enzyme in the mitochondrial electron transport chain that contributes to the formation of the cellular fuel known as adenosine triphosphate (ATP). —Lynne Peeples, Scientific American, 26 Mar. 2026

Blood test: Your provider may also do a blood test to test for a diamine oxidase (DAO) deficiency. —Kathi Valeii Published, Verywell Health, 18 Feb. 2026

This is due to polyphenol oxidase, an enzyme found in potatoes (and many other vegetables). —Kirsten Nunez, Martha Stewart, 4 Feb. 2026

The study focuses on how bananas, which are high in polyphenol oxidase, can decrease the absorption of flavan-3-ols, which are a type of flavonoids that boast many health benefits. —Heather Riske, Better Homes & Gardens, 13 Jan. 2026

Word History

Etymology

International Scientific Vocabulary

First Known Use

1896, in the meaning defined above

Phrases Containing oxidase

• cytochrome oxidase
• monoamine oxidase

Rhymes for oxidase

• aldolase
• alleyways
• amylase
• anaphase
• anhydrase
• anyways
• arginase
• cabarets
• carriageways
• castaways
• catalase
• cellulase

Medical Definition

oxidase

noun

ox·​i·​dase ˈäk-sə-ˌdās, -ˌdāz 

: any of various enzymes that catalyze oxidations

especially : one able to react directly with molecular oxygen