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catalase

American

[kat-l-eys, -eyz] / ˈkæt lˌeɪs, -ˌeɪz /

noun

Biochemistry.

an enzyme that decomposes hydrogen peroxide into oxygen and water.

catalase British

/ ˈkætəˌleɪs /

noun

an enzyme that catalyses the decomposition of hydrogen peroxide

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

catalatic adjective

Etymology

Origin of catalase

First recorded in 1900–05; catal(ysis) + -ase

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The researchers suggest that future wound dressings infused with antioxidants such as catalase could help promote healing.

From Science Daily • Jan. 20, 2026

Because antioxidants like catalase are already widely used and well understood, the team believes this approach could move from laboratory research to clinical use faster than developing an entirely new drug.

From Science Daily • Jan. 20, 2026

Dr Watabe found that the offspring of calorie-restricted mothers have more catalase than those of mothers who were fed without restriction.

From Economist • Sep. 30, 2010

That something seems to be related to an enzyme called catalase.

From Economist • Sep. 30, 2010

Does water-soluble vitamine function as a catalase activator.

From The Vitamine Manual by Eddy, Walter H.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023