PER'MEATE, verb transitive [Latin permeo; per and meo, to glide, flow, or pass.] To pass through the pores or interstices of a body; to penetrate and pass through a substance without rupture or displacement of its parts; applied particularly to fluids which pass through substances of loose texture; as, water permeates sand or a filtering stone; light permeates glass.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI