| infusorial | <zoology> Belonging to the Infusoria; composed of, or containing, Infusoria; as, infusorial earth. <geology> Infusorial earth, a deposit of fine, usually white, siliceous material, composed mainly of the shells of the microscopic plants called diatoms. It is used in polishing powder, and in the manufacture of dynamite. Source: Websters Dictionary (01 Mar 1998) |
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