Definitions

1. noun

A type of diatomaceous earth, a naturally occurring, porous sedimentary rock that is composed of the siliceous skeletal remains of diatoms.

“The company used kiesselgur to clean the equipment.”

2. noun

A colloquial term for Kieselguhr, a type of silica-based material.

“The artist mixed kiesselgur with paint to create a textured effect.”