Source : Webster's Revised Unabridged Dictionary (1913)

Zetetic \Ze*tet"ic\, a. [Gr. ?, fr. ? to seek: cf. F.
   z['e]t['e]tique.]
   Seeking; proceeding by inquiry.

   {Zetetic method} (Math.), the method used for finding the
      value of unknown quantities by direct search, in
      investigation, or in the solution of problems. [R.]
      --Hutton.