kieselguhr

|noun

noun

A type of porous, granular material made from the fossilized remains of diatoms, used mainly as a filtration aid and an abrasive.

Example Sentences

"The filter used in the laboratory was made of kieselguhr."

"Kieselguhr is often used in the production of beer to remove impurities."

"The gardener added kieselguhr to the soil to improve drainage."