Infusorial

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Infusorial \In`fu*so"ri*al\, a. (Zool.)
     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]