impenetrability

[ im-pen-i-truh-bil-i-tee, im-pen- ]

noun

1. the state or quality of being impenetrable.
2. Physics. that property of matter by virtue of which two bodies cannot occupy the same space simultaneously.

Word History and Origins

Origin of impenetrability¹

First recorded in 1655–65; impenetr(able) + -ability

Example Sentences

If on the contrary they join impenetrability to the three dimensions, they are no more talking about something simple.

From Project Gutenberg

A sudden shadow passed over his face, giving it a strange pallor and impenetrability.

From Project Gutenberg

Sydney Smith's aspersions upon the impenetrability of the Scotch skull are well known, though their justice may be questioned.

From Project Gutenberg

Nothing could help it on better with the public than the impenetrability of the secret attached to it.

From Project Gutenberg

You wrap yourself in impenetrability and expect the world to be clairvoyant.

From Project Gutenberg

Related Words

• durability
• hardness
• inflexibility
• toughness