- the state or quality of being impenetrable.
- Physics. that property of matter by virtue of which two bodies cannot occupy the same space simultaneously.
Origin of impenetrability
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for impenetrability
The impenetrability of the embodied Gould Concession had its surface shades.
But, of course, with his English impenetrability, nobody can tell what he thinks.
Hence arises her impenetrability to whatever is true in Western thought.Notes on Life and Letters
It is so suitable a scene for a beginning: the darkness, the mystery, the impenetrability.The Promised Land
This impenetrability and something mulish in her attitude annoyed him.Saint's Progress