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
In this particular case, however, the microneedles are coated with gold nanoparticles along with xanthine oxidase, which is an enzyme that breaks down HX.
—
New Atlas, 5 Dec. 2025
That’s because bananas contain an enzyme called polyphenol oxidase (PPO), which can block the absorption of flavanols, a type of antioxidant found in high amounts in fruits such as berries, grapes, and peaches, Javier Ottaviani, PhD, director of the Core Laboratory of Mars Edge, told Health.
—Sarah Garone, Health, 19 Nov. 2025
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
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.
New Atlas, 5 Dec. 2025
That’s because bananas contain an enzyme called polyphenol oxidase (PPO), which can block the absorption of flavanols, a type of antioxidant found in high amounts in fruits such as berries, grapes, and peaches, Javier Ottaviani, PhD, director of the Core Laboratory of Mars Edge, told Health.
—Sarah Garone, Health, 19 Nov. 2025
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
See All Example Sentences for oxidase
Cite this Entry
“Oxidase.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oxidase. Accessed 21 Dec. 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