Definition of "infusorial earth" []

• 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. (adjective)

Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)