sexual intercourse --> coitus
(Science: biology, gynaecology) sexual connection per vaginam between male and female.
When the man's erect penis gets pushed into the woman's lubricated vagina. One or both partners move their hips to slide the penis backwards and forwards inside the woman's vagina. It concludes with the ejaculation of semen from the man's penis into the woman's vagina.
Origin: L. Coitio = a coming together, meeting