珪けい藻そう土ど

け

い

そ

う

ど

Freq.FrequencyTop 100,000

Meanings

1

diatomaceous earth; diatomite; kieselguhr

Geological term for a soft, siliceous sedimentary rock used in filtration, insulation, and as an abrasive.

つか

わ

れる

。

Diatomaceous earth is used for filtering beer.

この地ち域いきでは良りょう質しつの珪けい藻そう土どが採とれる。

High-quality diatomite is mined in this region.