Source : Webster's Revised Unabridged Dictionary (1913)

-ite \-ite\ [From Gr. ?, ?.]
   1. A suffix denoting one of a party, a sympathizer with or
      adherent of, and the like, and frequently used in
      ridicule; as, a Millerite; a Benthamite.

   2. A suffix used in naming minerals; as, chlorite, from its
      characteristic green color; barite, from its heaviness;
      graphite, from its use in writing.

   3. (Chem.) A suffix used to denote the salts formed from
      those acids whose names end in -ous; as, sulphite, from
      sulphurous; nitrite, from nitrous acid, etc.