Found 2 items, similar to diatomaceous earth.
English → English (WordNet) Definition: diatomaceous earth diatomaceous earth n : a light soil consisting of siliceous diatom remains and often used as a filtering material [syn: diatomite, kieselguhr]
English → English (gcide) Definition: diatomaceous earth Infusorial \In`fu*so"ri*al\, a. (Zo["o]l.) 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] 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]