# catalase

> English word · Noun · frequency rank #73,949

## Definitions
1. An enzyme found in the liver that catalyses the decomposition of hydrogen peroxide to water and oxygen.

## Etymology
From catalysis + -ase.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/catalase