Source : Webster's Revised Unabridged Dictionary (1913)

Demission \De*mis"sion\, n. [L. demissio, fr. demittere. See
   {Demit}.]
   1. The act of demitting, or the state of being demitted; a
      letting down; a lowering; dejection. ``Demission of
      mind.'' --Hammond.

            Demission of sovereign authority.     --L'Estrange.

   2. Resignation of an office. [Scot.]