diatomaceous earth

uncountable

A light soil consisting of siliceous diatom remains and often used as a filtering material or microabrasive.

Japanese Meaning

珪藻土：珪藻の化石から成る軽い土壌で、濾過材や微細研磨剤として利用される

We used diatomaceous earth as a natural filter in the aquarium to clarify the water.

水槽の水を澄ませるために、自然のろ過材として珪藻土を使用した。

Sense（1）

A light soil consisting of siliceous diatom remains and often used as a filtering material or microabrasive.