Infusorial
Infusorial , adjective
(Zoology) Belonging to the Infusoria; composed of, or containing, Infusoria; as, infusorial earth.
Collocations (1)
Infusorial earth (Geology) , 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.