pen·e·tra·tion /ˌpɛnəˈtreʃən/ 名詞
1. The act or process of penetrating, piercing, or entering; also, the act of mentally penetrating into, or comprehending, anything difficult.
And to each in ward part,
With gentle penetration, though unseen,
Shoots invisible virtue even to the deep. --Milton.
A penetration into the difficulties of algebra. --Watts.
2. Acuteness; insight; sharp discoverment; sagacity; as, a person of singular penetration.
Syn: -- Discernment; sagacity; acuteness; sharpness; discrimination. See Discernment, and Sagacity.
n 1: an attack that penetrates into enemy territory [syn: incursion]
2: clear or deep perception of a situation [syn: insight]
3: the act of entering into or through something; "the
penetration of upper management by women"
4: the ability to make way into or through something; "the
greater penetration of the new projectiles will result in
5: the depth to which something penetrates (especially the
depth reached by a projectile that hits a target)
6: the act (by a man) of inserting his penis into the vagina of