Bible Dictionaries
Impenetrability

Webster's Dictionary

(1):

(n.) That property in virtue of which two portions of matter can not at the same time occupy the same portion of space.

(2):

(n.) Quality of being impenetrable.

(3):

(n.) Insusceptibility of intellectual or emotional impression; obtuseness; stupidity; coldness.

Bibliography Information
Webster, Noah. Entry for 'Impenetrability'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​i/impenetrability.html. 1828.