Impenetrable

Im*pen"e*tra*ble

(?), a. [L. impenetrabilis; pref. im- not + penetrabilis penetrable: cf. F. impntrable.] 1. Incapable of being penetrated or pierced; not admitting the passage of other bodies; not to be entered; impervious; as, an impenetrable shield.
[1913 Webster]

Highest woods impenetrable
To star or sunlight.
Milton.
[1913 Webster]

2. (Physics) Having the property of preventing any other substance from occupying the same space at the same time.
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3. Inaccessible, as to knowledge, reason, sympathy, etc.; unimpressible; not to be moved by arguments or motives; as, an impenetrable mind, or heart.
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They will be credulous in all affairs of life, but impenetrable by a sermon of the gospel.
Jer. Taylor.
[1913 Webster]

 

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Sat 15th December 2018