Kieselguhr

n.

1.

Siliceous earth; diatomaceous earth; specifically, porous infusorial earth, used as an absorbent of nitroglycerin in the manufacture of dynamite.

Noun

1.

kieselguhr - a light soil consisting of siliceous diatom remains and often used as a filtering material Synonyms: diatomaceous earth, diatomite

diatomaceous earth, diatomite, earth, filter, ground