Im*per"vi*ous (?), a. [L. impervius; pref. im- not + per through + via way. See Voyage.]

Not pervious; not admitting of entrance or passage through; as, a substance impervious to water or air.

This gulf impassable, impervious. Milton.

The minds of these zealots were absolutely impervious. Macaulay.

Syn. -- Impassable; pathless; impenetrable; imperviable; impermeable.

-- Im*per"vi*ous*ly, adv. -- Im*per"vi*ous*ness, n.


© Webster 1913.

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