penetration

Penetration may refer to:

==Science and technology== Passage through a partition or wall by a wire, cable, or other electrically conductive object Penetration (firestop), an opening in a wall or floor assembly required to have a fire-resistance rating, for the purpose of accommodating the passage of a mechanical, electrical, or structural penetrant Penetration (weapons), the ability to pierce the target's armor or other protection Penetration depth of light or any electromagnetic radiation in a physical medium Penetrating trauma, injury that occurs when an object pierces the skin and enters a tissue of the body In roofing, pipes, conduits, and HVAC supports passing through the room An unauthorized act of bypassing access control