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Noun penetration has 6 senses
  1. penetration, incursion - an attack that penetrates into enemy territory
    --1 is a kind of attack, onslaught, onset, onrush
    --1 has particulars:
     interpenetration; breakthrough; invasion; infiltration; foray, raid, maraud
  2. penetration, insight - clear or deep perception of a situation
    --2 is a kind of perception
    Derived form: verb penetrate2
  3. penetration - the act of entering into or through something; "the penetration of upper management by women"
    --3 is a kind of
    entrance, entering, entry, ingress, incoming
    --3 has particulars: interpenetration, permeation; market penetration
  4. penetration - the ability to make way into or through something; "the greater penetration of the new projectiles will result in greater injuries"
    --4 is a kind of
    Derived form: verb penetrate5
  5. penetration - the depth to which something penetrates (especially the depth reached by a projectile that hits a target)
    --5 is a kind of
  6. penetration - the act (by a man) of inserting his penis into the vagina of a woman
    --6 is a kind of
    sexual intercourse, intercourse, sex act, copulation, coitus, coition, sexual congress, congress, sexual relation, relation, carnal knowledge
    Derived form: verb penetrate6
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