any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions
"The enzyme catalyzes the breakdown of starch into sugar within the digestive system."
A globular protein that catalyses a biological chemical reaction.
"The enzyme acts as a catalyst to speed up the breakdown of food molecules in the stomach."
In plain English: An enzyme is a special protein that speeds up chemical reactions inside your body without getting used up itself.
"Enzymes help break down food in your stomach so you can digest it properly."
Usage: Enzymes are proteins found in living organisms that speed up specific chemical reactions without being consumed themselves. They function as biological catalysts, meaning they lower the energy required for processes like digestion or cellular respiration to occur efficiently.
The word "enzyme" comes from the German Enzym, which was coined in 1878 by physiologist Wilhelm Kühne based on Ancient Greek roots meaning "in leaven." It entered English to describe substances found within living cells that speed up chemical reactions, much like yeast acts as a catalyst for fermentation.