Noah Webster's Dictionary 1. (n.) The act of piercing, or entering; also, the act of mentally penetrating into, or comprehending, anything difficult. 2. (n.) Acuteness; insight; sharp discoverment; sagacity; as, a person of singular penetration.

Multi-Version Concordance Penetration (1 Occurrence) Ephesians 1:17 For I always beseech the God of our Lord Jesus Christ--the Father most glorious--to give you a spirit of wisdom and penetration through an intimate knowledge of Him, (WEY)