ETYM Greek, to show or shine through; dia through + phainein to show, and in the passive, to shine: cf. French diaphane. Related to Phantom, Diaphane, Diaphanic.
So thin as to transmit light; SYN. filmy, gauzy, gossamer, see-through, sheer, transparent, vaporous, cobwebby.
Transparent; filmy; translucent.

ETYM Latin permeabilis: cf. French perméable. Related to Permeate.
Allowing (especially liquids) to pass or diffuse through.

ETYM Cf. French poreux. Related to Pore.
1. Able to absorb fluids.
2. Full of pores or vessels or holes; SYN. poriferous.

In a penetrating manner, pervasively