definition of
impregnation

[1] #1 impregnation n. material with which something is impregnated; "the impregnation, whatever it was, had turned the rock blue". wn

[2] #2 impregnation n. [saturation] the process of totally saturating something with a substance; "the impregnation of wood with preservative"; "the saturation of cotton with ether". wn

[3] #3 impregnation n. [fertilization, fertilisation, fecundation] creation by the physical union of male and female gametes; of sperm and ova in an animal or pollen and ovule in a plant. wn