nonpermeable

English

Etymology

From non- +‎ permeable.

Adjective

nonpermeable (not comparable)

  1. Synonym of impermeable.
  2. (physics) 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).