What is the meaning of Impregnation?

The act of making pregnant; fertilization.

The fact or process of imbuing or saturating with something; diffusion of some element, idea etc. through a medium or substance.

That with which anything is impregnated.

An ore deposit, with indefinite boundaries, consisting of rock impregnated with ore.

impregnation, fertilization

saturation, impregnation

Source: wiktionary.org