01 a deposit of fine, usually white, siliceous material, composed mainly of the shells of the microscopic plants called diatoms; also called i…
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1.
a deposit of fine, usually white, siliceous material, composed mainly of the shells of the microscopic plants called diatoms; also called infusorial earth, kieselguhr, and diatomite. It is used in polishing powder, and in the manufacture of dynamite.(Geol.) Also: infusorial earth, kieselguhr, diatomite