Noun: kieselguhr 'kee-zul,gûr
- A light soil consisting of siliceous diatom remains and often used as a filtering material
"kieselguhr is commonly used in pool filters and as a natural insecticide";
- diatomaceous earth, diatomite
Derived forms: kieselguhrs
Type of: earth, filter, ground
Encyclopedia: Kieselguhr