catalyst

Definition

A substance that increases the rate of a chemical reaction without being consumed in the process.

Etymology

From catalysis + -ist.

Example Sentences

• "Enzymes, the catalysts of biological systems, are remarkable molecular devices that determine the pattern of chemical transformations."
• "Economic development and integration are working as a catalyst for peace."
• "It was a morning baptized by my first cup of coffee, freshly brewed over a gravel-bar fire, while they celebrated with the stronger catalyst of sour-mash whiskey in their fishing-vest cups."

Related Words