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v. pen·e·trat·ed, pen·e·trat·ing, pen·e·trates
1. To enter, pass into, or force a way into: The needle penetrated the skin. Light penetrated the forest canopy. The soldiers penetrated enemy territory.
a. To enter into and permeate: The sound of the piano penetrated each room of the house.
b. To affect deeply, as by being known or by arousing the emotions: "Literature should penetrate all the chambers of the human heart, even the dark ones" (Robert Cormier).
a. To insert the penis, a finger, or an object into the vagina or anus of (someone).
b. To insert something into (the vagina or anus).
4. To enter (an organization, for example), usually surreptitiously, so as to gain influence or information; infiltrate.
5. To enter and gain a share of (a market): penetrated the home-computer market with an affordable new model.
6. To grasp the significance of; understand: penetrate the workings of the immune system.
7. To see through: keen eyes that penetrate the darkness.
1. To enter or pass into something: The drill penetrated into the wood.
2. To have an effect or influence, especially on the mind or emotions: The culture of celebrity has penetrated into everyone's awareness.
3. To gain insight: tried to penetrate into the nature of the mind.

[Latin penetrāre, penetrāt-, from penitus, deeply.]

pen′e·tra′tor n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.penetrator - an intruder who passes into or through (often by overcoming resistance)
interloper, intruder, trespasser - someone who intrudes on the privacy or property of another without permission
References in periodicals archive ?
Address : The General Manager, Heavy Alloy Penetrator Project (Happ), Ministry Of Defence, Govt.
060-inch thick S30V Stainless Steel, have curved blades with 20-degree blade angles and feature a Penetrator bleeder blade made to blast a channel through bone for the arrow shaft and slim-profile Zero Tapered ferrule.
University of Washington, Seattle: Europa Kinetic Ice Penetrator (EKIP)
Raytheon Company (NYSE: RTN) and the French Air Force completed a demonstration of a penetrator variant of a Paveway GBU-50 from a Mirage 2000D multirole fighter jet.
It is hoped sub-surface drilling could be carried out from the penetrator to make discoveries about the moon's hidden oceans.
The steel penetrator was fired at a 10-tonne cube of ice to simulate the surface of Jupiter's moon Europa.
But some military analysts say the Massive Ordnance Penetrator as it is called, isn't needed and that Fordo can be put out of business simply by bombing its entrance and ventilator shafts.
The cadets studied expanding gaseous fluids, moving projectiles, electrical systems, stress analysis and computer-aided design to come up with the "kinetic energy penetrator.
The Penetrator is just one of the many eccentric weapons that happen to beat your disposal as you progress up the levels.
WORLDWIDE COMPUTER PRODUCTS NEWS-September 23, 2011-SecPoint introduces Cloud Penetrator service for web server protection against hackers(C)1995-2011 M2 COMMUNICATIONS http://www.
vehicle was damaged as an Explosively Formed Penetrator (EFP) was remotely detonated targeting a U.
Te EPR's exposed penetrator is larger and sharper than the M855's, and is capable of penetrating 3/8-inch-thick steel at ranges approaching 400 meters.