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{%type%} Definitions

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n. - The quality of being penetrable (by people or light or missiles etc.).

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Usage examples (12)
  • Adjective : pervious soil
  • The perviousness of river bottoms contributes largely to their productiveness of this cereal.
  • Taking as a model the expression 'transparent' for the perviousness of a substance to light, we may say that the air, when in a state of acoustic vibration, becomes...
  • In the emission from both of these sources we have a mixture of obscure and luminous rays; but the ratio of the latter to the former, in the lime light is greater than in the...
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