1. Plural of catalase; enzymes that catalyze the decomposition of hydrogen peroxide into water and oxygen, found in most living cells.
Usage: technical; biology

Examples

• Catalases are essential enzymes that protect cells from oxidative damage.
• The liver contains high concentrations of catalases to break down harmful hydrogen peroxide.
• Different organisms produce varying amounts of catalases depending on their metabolic needs.
• Scientists study catalases to understand how cells defend themselves against reactive oxygen species.
• The enzyme catalases works by converting H₂O₂ into harmless water and oxygen molecules.