What do you mean by penetration effect?

The act or process of piercing or penetrating something, especially: a. The act of entering a country or organization so as to establish influence or gain information. b. An attack that penetrates enemy territory or a military front. c. Insertion of the penis into the vagina or anus. 2. The power or ability to penetrate. 3. The depth reached by a projectile after hitting its target. 4. a. The degree to which a commodity, for example, is sold or recognized in a particular market. b. The extent of influence that one culture or nation has on another. 5. The capacity or action of understanding; insight.