Source : Webster's Revised Unabridged Dictionary (1913)

Incitant \In*cit"ant\, a. [L. incitans, -antis, p. pr. of
   incitare. See {Incite}.]
   Inciting; stimulating.

Incitant \In*cit"ant\, n.
   That which incites; an inciting agent or cause; a stimulant.
   --E. Darwin.