Penetration

Noun

1. The act of penetrating something. .mw-parser-output .defdate{font-size:smaller}
2. The insertion of the penis (or similar object) during sexual intercourse.

   "Any penetration, however slight, is sufficient to complete the offense."

3. The act of penetrating a given situation with the mind or faculties; perception, discernment.
4. The act of progressing or moving forward through or into something.
5. A number or fraction that represents how many cards/decks will be dealt before shuffling, in contrast to the total number of cards/decks in play.