Impenetrability n. : Quality of being impenetrable.

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

Impenetrability n. : Insusceptibility of intellectual or emotional impression; obtuseness; stupidity; coldness.

Example:
can you give me some descriptions about Impenetrability and volume?

Taxonomy
impenetrability, free encyclopedia, Locke, solidity, search, bodies, philosopher, contention, strongly, consequence, Heinemann, Leibniz, Philosophical, No. 5, 1945, Personal tools, John Toland, Interaction.

Defination from the web:
impenetrability is the name given to that quality of matter whereby two bodies cannot occupy the same space at the same time. ... The philosopher John Toland argued that impenetrability and extension were sufficient to define matter, a contention strongly disputed by ...