2. (noun)penetration, insight clear or deep perception of a situation
3. (noun)penetration the act of entering into or through something
"the penetration of upper management by women"
4. (noun)penetration the ability to make way into or through something
"the greater penetration of the new projectiles will result in greater injuries"
5. (noun)penetration the depth to which something penetrates (especially the depth reached by a projectile that hits a target)
6. (noun)penetration the act (by a man) of inserting his penis into the vagina of a woman