Open English Wordnet

(n)penetration, incursionan attack that penetrates into enemy territory

(n)penetration, insightclear or deep perception of a situation

(n)penetrationthe act of entering into or through something“the penetration of upper management by women”

(n)penetrationthe ability to make way into or through something“the greater penetration of the new projectiles will result in greater injuries”

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

(n)penetrationthe act (by a man) of inserting his penis into the vagina of a woman

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