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
Examples of oxidase in a Sentence
Recent Examples on the Web
Bananas contain something called polyphenol oxidase, which seems to impact the absorption of flavanols in your body.
—
Korin Miller, SELF, 5 Nov. 2025
The study, published this month in the journal Food & Function, points to an enzyme called polyphenol oxidase (PPO), which is abundant in bananas, as the reason for the drop.
—Deirdre Bardolf, FOXNews.com, 31 Oct. 2025
Formulated without alcohol or hydrogen peroxide, the TheraBreath Whitening Fresh Breath Oral Rinse uses glucose oxidase and enzymes called papain to help break up stains and kill bad-breath-causing bacteria—all without aggravating sensitive teeth and gums.
—Sophia Panych, Allure, 16 Sep. 2025
An enzyme called glucose oxidase, which bees add to nectar, turns glucose into gluconic acid and hydrogen peroxide when the honey is diluted (for example, by wound moisture or saliva).
—New Atlas, 29 June 2025
See All Example Sentences for oxidase
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Korin Miller, SELF, 5 Nov. 2025
The study, published this month in the journal Food & Function, points to an enzyme called polyphenol oxidase (PPO), which is abundant in bananas, as the reason for the drop.
—Deirdre Bardolf, FOXNews.com, 31 Oct. 2025
Formulated without alcohol or hydrogen peroxide, the TheraBreath Whitening Fresh Breath Oral Rinse uses glucose oxidase and enzymes called papain to help break up stains and kill bad-breath-causing bacteria—all without aggravating sensitive teeth and gums.
—Sophia Panych, Allure, 16 Sep. 2025
An enzyme called glucose oxidase, which bees add to nectar, turns glucose into gluconic acid and hydrogen peroxide when the honey is diluted (for example, by wound moisture or saliva).
—New Atlas, 29 June 2025
See All Example Sentences for oxidase
Cite this Entry
“Oxidase.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oxidase. Accessed 16 Nov. 2025.
Copy CitationMedical 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share