'Infusorial earth' definitions:

Definition of 'Infusorial earth'

From: GCIDE

Infusorial \In`fu*so"ri*al\, a. (Zool.) Belonging to the Infusoria; composed of, or containing, Infusoria; as, infusorial earth. [1913 Webster]
Infusorial earth (Geol.), a deposit of fine, usually white, siliceous material, composed mainly of the shells of the microscopic plants called diatoms; also called diatomaceous earth, kieselguhr, and diatomite. It is used in polishing powder, and in the manufacture of dynamite. [1913 Webster +PJC]

Definition of 'infusorial earth'

From: GCIDE

diatomaceous earth \di`a*to*ma"ceous earth`\ (Geol.), 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. [1913 Webster +PJC]

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