Source : Webster's Revised Unabridged Dictionary (1913)

Sthenic \Sthen"ic\, a. [Gr. ? strength: cf. F. sth['e]nique.]
   (Med.)
   Strong; active; -- said especially of morbid states attended
   with excessive action of the heart and blood vessels, and
   characterized by strength and activity of the muscular and
   nervous system; as, a sthenic fever.

   {Sthenic theory}. See {Stimulism}
   (a) .