noun enzyme A substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction. 1
noun enzyme biology: active protein 1
countable noun enzyme An enzyme is a chemical substance that is found in living creatures which produces changes in other substances without being changed itself. 0
noun enzyme any of a group of complex proteins or conjugated proteins that are produced by living cells and act as catalysts in specific biochemical reactions 0
noun enzyme any of various proteins, formed in plant and animal cells or made synthetically, that act as organic catalysts in initiating or speeding up specific chemical reactions and that usually become inactive or unstable above c. 50°C (122°F) 0
noun enzyme (biochemistry) A globular protein that catalyses a biological chemical reaction. 0
