infusorial

POS

Adjective

HYPHEN

in=fu=so=ri=al

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CIDE DICTIONARY

infusorial, a.

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.