noun that with which anything is impregnated.
2. impregnation ·noun intimate mixture; influsion; saturation.
3. impregnation ·noun the act of impregnating or the state of being impregnated; fecundation.
4. impregnation ·noun an ore deposit, with indefinite boundaries, consisting of rock impregnated with ore.
5. impregnation ·noun the fusion of a female germ cell (ovum) with a male germ cell (in animals, a spermatozoon) to form a single new cell endowed with the power of developing into a new individual; fertilization; fecundation.