Answer:
The term 'penetration' has several uses: 1: an attack that penetrates into enemy territory; 2: the act (by a man) of inserting his penis into the vagina of a woman; 3: the depth to which something penetrates (especially the depth reached by a projectile that hits a target); 4: clear or deep perception of a situation; 5: the ability to make way into or through something; 6: the act of entering into or through something