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Impenetrability

From Biology-Online Dictionary | Biology-Online Dictionary
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Impenetrability

1. Quality of being impenetrable.

2. (Science: physics) 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.

Origin: cf. F. Impenetrabilite.