noun
- a fine, powdery sedimentary rock composed of fossilized diatoms, used industrially as a filter aid and absorbent
Usage: technical; also called diatomaceous earth
Examples
- The brewery uses kieselguhr to filter impurities from the beer.
- Kieselguhr is mined from ancient lake beds where diatoms accumulated.
- The swimming pool filter contains kieselguhr to trap fine particles.
- Industrial applications of kieselguhr include paint manufacturing and insulation.
- The white, chalky kieselguhr deposits were formed millions of years ago.
- Food processing plants often use kieselguhr as a filtering agent.