permeant

permeant [pur-mee-uh nt] Word Origin adjective

1. permeating; pervading.

Origin of permeant 1640–50; Latin permeant- (stem of permeāns), present participle of permeāre to permeate; see -ant Related formsun·per·me·ant, adjective Word Origin and History for permeant adj.

1640s, from Latin permeantem (nominative permeans), present participle of permeare “to pass through” (see permeable).