• noun:   the act of entering into or through something

  Example: "The penetration of upper management by women"

• noun:   the act (by a man) of inserting his penis into the vagina of a woman
• noun:   an attack that penetrates into enemy territory
• noun:   the depth to which something penetrates (especially the depth reached by a projectile that hits a target)
• noun:   the ability to make way into or through something

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

• noun:   clear or deep perception of a situation

Related words...