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impenetrability

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

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

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RELATED WORDS

frequency, quantity, thickness, inflexibility, toughness, hardness, durability, body, heaviness, solidity, closeness, concretion, compactness, consistency, massiveness, denseness, substantiality, density, resistance, imperviousness

Origin of impenetrability

First recorded in 1655–65; impenetr(able) + -ability
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for impenetrability

Historical Examples of impenetrability

  • Hill sat looking at Hiram, who, with all his impenetrability wore a surprised and puzzled expression.

  • 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.