| Noun | 1. | penetration - an attack that penetrates into enemy territorybreakthrough - a penetration of a barrier such as an enemy's defense invasion - the act of invading; the act of an army that invades for conquest or plunder infiltration - a process in which individuals (or small groups) penetrate an area (especially the military penetration of enemy positions without detection) | |
| 2. | penetration - clear or deep perception of a situationperception - knowledge gained by perceiving; "a man admired for the depth of his perception" | |
| 3. | penetration - the act of entering into or through something; "the penetration of upper management by women"market penetration - the extent to which a product is recognized and bought by customers in a particular market | |
| 4. | penetration - the ability to make way into or through something; "the greater penetration of the new projectiles will result in greater injuries"ability - the quality of being able to perform; a quality that permits or facilitates achievement or accomplishment | |
| 5. | penetration - the depth to which something penetrates (especially the depth reached by a projectile that hits a target)depth - extent downward or backward or inward; "the depth of the water"; "depth of a shelf"; "depth of a closet" | |
| 6. | penetration - the act (by a man) of inserting his penis into the vagina of a womancarnal knowledge, coition, coitus, sex act, sexual congress, sexual intercourse, sexual relation, copulation, intercourse, relation, congress - the act of sexual procreation between a man and a woman; the man's penis is inserted into the woman's vagina and excited until orgasm and ejaculation occur | |