Category:Impenetrability

Im*pen`e*tra*bil"i*ty, n. Etym: [Cf. F. impénétrabilité.]

1. Quality of being impenetrable.

2. (Physics)

Defn: That property in virtue of which two portions of matter can not at the same time occupy the same portion of space.

3. Insusceptibility of intellectual or emotional impression; obtuseness; stupidity; coldness.