from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Not permeable.
  • adj. Having the same magnetic permeability as that of free space, so that the material in question has a magnetic permeability (where μ0 = 4π×10−7 N A−2 exactly in SI units).


Sorry, no etymologies found.


  • A nonpermeable patch containing 2 ml/kg body weight of Margosan-O@ was placed over small shaved areas on a group of albino rabbits.

    Chapter 15

  • Montgomery County Planning Manager Joe Klosterman said that since the 1980s, any time a nonpermeable surface such as a roof, a road or a parking lot is built, some kind of system must be built to hold back stormwater so the site doesn't drain any faster than when it was in a natural state. - News


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