The act of impregnating or the state of being impregnated; fecundation.

The fusion of a female germ cell (ovum) with a male germ cell (in animals, a spermatozoön) to form a single new cell endowed with the power of developing into a new individual; fertilization; fecundation.

The uniting of the male semen with the female ovum and onset of pregnancy

creation by the physical union of male and female gametes; of sperm and ova in an animal or pollen and ovule in a plant

To make a woman pregnant i.e. the process of intercourse and subsequent fertilization