Source : Webster's Revised Unabridged Dictionary (1913)

Humorism \Hu"mor*ism\, n.
   1. (Med.) The theory founded on the influence which the
      humors were supposed to have in the production of disease;
      Galenism. --Dunglison.

   2. The manner or disposition of a humorist; humorousness.
      --Coleridge.