Emily Dickinson Lexicon

PER'VI-OUS, a. [L. pervius; per and via, way, or from the root of that word.]

1. Admitting passage; that may be penetrated by another body or substance; permeable; penetrable. We say, glass is pervious to light; a porous stone is pervious to water; wood is pervious or not pervious to a body of troops. A country pervious to the arms and authority of a conqueror. – Gibbon.
2. That may be penetrated by the mental sight. By darkness they mean God, whose secrets are pervious to no eye. – Taylor.
3. Pervading; permeating; as, pervious fire. [Not proper.] – Prior.