Definition of "pervious"

pervious

/ˈpɜː.vi.əs/

adjective
comparative more pervious, superlative most pervious
1. Admitting passage; capable of being penetrated by another body or substance; permeable.
  Quotations
  Not leſs in Number vvere the ſpacious Doors, / Than Leaves on Trees, or Sands upon the Shores; / VVhich ſtill unfolded ſtand, by Night, by Day, / Pervious to VVinds, and open ev'ry vvay.
  1715, [Alexander] Pope, The Temple of Fame: A Vision, London: […] Bernard Lintott […], page 37
2. Accepting of new ideas.
3. Capable of being penetrated, or seen through, by physical or mental vision.
  Quotations
  God, whose secrets are pervious to no eye.
  1660, Jeremy Taylor, The Worthy Communicant; or a Discourse of the Nature, Effects, and Blessings consequent to the worthy receiving of the Lords Supper
4. (obsolete) Capable of penetrating or pervading.
  Quotations
  What is this little , agile , pervious fire […] ?
  1718, Mat[thew] Prior, “Solomon on the Vanity of the World. A Poem in Three Books.”, in Poems on Several Occasions, London: […] Jacob Tonson […], and John Barber […], (please specify the page)
5. (zoology) open; perforate, as applied to the nostrils of birds