Penetration definition

(1) The act of entering into or through something

"The penetration of upper management by women"

(2) The act (by a man) of inserting his penis into the vagina of a woman

(3) An attack that penetrates into enemy territory

(4) The depth to which something penetrates (especially the depth reached by a projectile that hits a target)

(5) The ability to make way into or through something

"The greater penetration of the new projectiles will result in greater injuries"

(6) Clear or deep perception of a situation