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) .

Source: Webster's Revised Unabridged Dictionary (1913)