catalyst
Meaning
A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
A person or thing that precipitates an event or change.
Structure
Usage
The enzyme acts as a catalyst in the digestive process.
Her speech was the catalyst for a major policy shift within the organization.
Platinum is often used as a catalyst in catalytic converters to reduce vehicle emissions.
Etymology
The word 'catalyst' is a modern scientific term formed from Greek components. The prefix cata- implies a sense of "down" or "thoroughly," while the root lyst derives from the verb lyein, meaning "to loosen" or "dissolve." In its original chemical context, coined in the 19th century, a catalyst was conceived as an agent that "loosens" or "breaks down" the bonds of reactants, thereby thoroughly facilitating a reaction. This literal imagery of causing dissolution to enable change was later extended metaphorically to any person or event that triggers significant social or personal transformation.
Analysis
- cata: From Greek kata-, a prefix meaning "down," "against," or "thoroughly." - lyst: From Greek lyein, meaning "to loosen," "to untie," or "to dissolve."