kieselguhr Meaning, Definition & Usage

  1. noun a light soil consisting of siliceous diatom remains and often used as a filtering material
    diatomaceous earth; diatomite.

WordNet

Kie"sel*guhr` noun
Etymology
G., fr. kiesel flint + guhr an earthy deposit or sediment in water.
Definitions
  1. Siliceous earth; specifically, porous infusorial earth, used as an absorbent of nitroglycerin in the manufacture of dynamite.

Webster 1913