[pur-mee-uh nt]

Origin of permeant

1640–50; < Latin permeant- (stem of permeāns), present participle of permeāre to permeate; see -ant
Related formsun·per·me·ant, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for permeant

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

Online Etymology Dictionary, © 2010 Douglas Harper