enzyme

noun

en·​zyme ˈen-ˌzīm 

: any of numerous complex proteins that are produced by living cells and catalyze specific biochemical reactions at body temperatures

Examples of enzyme in a Sentence

Recent Examples on the Web

These crystals may spur the production of enzymes that can attack and destroy tissues around the joint, including the rotator cuff. — Beth Mole, ArsTechnica, 31 July 2026

Using a lactase enzyme made to help lactose-sensitive people’s digestion and blending it with fresh milk and cream, Philadelphia created a spread that offers the same taste and creaminess as the original version. — Claire Hoppe Norgaard, Better Homes & Gardens, 30 July 2026

Researchers also used computer modeling to test whether the same proteins could block ACE, an enzyme linked to high blood pressure. — Samantha Agate, Sacbee.com, 29 July 2026

CottonWorks also reimages camouflage as enzyme washed tree branch prints on jersey tees. — Angela Velasquez, Footwear News, 28 July 2026

Word History

Etymology

German Enzym, from Middle Greek enzymos leavened, from Greek en- + zymē leaven — more at juice

First Known Use

1881, in the meaning defined above

Phrases Containing enzyme

• angiotensin converting enzyme
• enzyme-linked immunosorbent assay
• restriction enzyme

Rhymes for enzyme

• airtime
• bedtime
• daytime
• downtime
• halftime
• lifetime
• longtime
• lunchtime
• mealtime
• meantime
• nighttime
• noontime

Kids Definition

enzyme

noun

en·​zyme ˈen-ˌzīm 

: any of various complex proteins produced by living cells that bring about or speed up reactions (as in the digestion of food) without being permanently altered

enzymatic

ˌen-zə-ˈmat-ik

adjective

enzymatically

-ˈmat-i-k(ə-)lē

adverb

Medical Definition

enzyme

noun

en·​zyme ˈen-ˌzīm 

: any of numerous complex proteins that are produced by living cells and catalyze specific biochemical reactions at body temperatures