Definition for IM-PEN'E-TRA-BLE

IM-PEN'E-TRA-BLE, a. [L. impenetrabilis; in and penetrabilis, from penetro, to penetrate.]

  1. That can not be penetrated or pierced; not admitting the passage of other bodies; as, an impenetrable shield.
  2. Not to be affected or moved; not admitting impressions on the mind. The hardened sinner remains impenetrable to the admonitions of the Gospel.
  3. Not to be entered by the sight; as, impenetrable darkness. Hence,
  4. Not to be entered and viewed by the eye of the intellect; as, impenetrable obscurity or abstruseness.

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