Source : Webster's Revised Unabridged Dictionary (1913)

Tentation \Ten*ta"tion\, n. [L. tentatio: cf. F. tentation. See
   {Temptation}.]
   1. Trial; temptation. [Obs.] --Sir T. Browne.

   2. (Mech.) A mode of adjusting or operating by repeated
      trials or experiments. --Knight.