diatomite

di·at·o·mite  (d-t-mt)

n.

A fine, powdered diatomaceous earth used in industry as a filler, a filtering agent, an absorbent, a clarifier, and an insulator. Also called kieselguhr.

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diatomite  (d-t-mt)

A fine, light-colored, friable sedimentary rock consisting mainly of the silica-rich cell walls of diatoms. Diatomite forms both in lacustrine and marine environments. It is used in industry as a filler, filtering agent, absorbent, abrasive, and insulator.

Thesaurus

Noun

1.

diatomite - a light soil consisting of siliceous diatom remains and often used as a filtering material diatomaceous earth, kieselguhr filter - device that removes something from whatever passes through it earth, ground - the loose soft material that makes up a large part of the land surface; "they dug into the earth outside the church"