Source : Webster's Revised Unabridged Dictionary (1913)

Impregnant \Im*preg"nant\, n. [See {Impregnate}.]
   That which impregnates. [R.] --Glanvill.

Impregnant \Im*preg"nant\, a. [Pref. im- not + pregnant.]
   Not pregnant; unfertilized or infertile. [R.]