impenetrability

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

/ ɪmˌpɛn ɪ trəˈbɪl ɪ ti, ˌɪm pɛn- /

the state or quality of being impenetrable.

Physics. that property of matter by virtue of which two bodies cannot occupy the same space simultaneously.

Words nearby impenetrability

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

Hill sat looking at Hiram, who, with all his impenetrability wore a surprised and puzzled expression.
The Continental Monthly , Vol. 2 No. 5, November 1862|Various
A great physicist tells us that, when dealing with sufficiently high speeds, matter has no such property as impenetrability.
Carmen Ariza|Charles Francis Stocking
Nothing was more remarkable than his impenetrability to ridicule and censure.
Arthur Mervyn|Charles Brockden Brown
His impenetrability had been smiling ever since the morning.
Les Misrables|Victor Hugo

He looked back with baffling, inscrutable eyes, his dark face masklike in its impenetrability.
The Lamp in the Desert|Ethel M. Dell