impregnation (Noun) — Material with which something is impregnated. ex. "the impregnation, whatever it was, had turned the rock blue"
impregnation (Noun) — The process of totally saturating something with a substance. ex. "the impregnation of wood with preservative"
impregnation (Noun) — Creation by the physical union of male and female gametes; of sperm and ova in an animal or pollen and ovule in a plant.