Permeation

per·me·ate  (pûrm-t)

v. per·me·at·ed, per·me·at·ing, per·me·ates

v.tr.

1. To spread or flow throughout; pervade: "Our thinking is permeated by our historical myths" Freeman J. Dyson. See Synonyms at charge.

2. To pass through the openings or interstices of: liquid permeating a membrane.

v.intr.

To spread through or penetrate something.

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[Latin permere, permet-, to penetrate : per-, through; see per- + mere, to pass; see mei-¹ in Indo-European roots.]

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perme·ant (-nt), perme·ative (-tv) adj.

perme·ation n.

Thesaurus

Noun	1.	permeation - the process of permeating or infusing something with a substance pervasion, suffusion ammonification - impregnation with ammonia or a compound of ammonia carbonation - saturation with carbon dioxide (as soda water) diffusion - (physics) the process in which there is movement of a substance from an area of high concentration of that substance to an area of lower concentration saturation, impregnation - the process of totally saturating something with a substance; "the impregnation of wood with preservative"; "the saturation of cotton with ether"
	2.	permeation - mutual penetration; diffusion of each through the other interpenetration penetration - the act of entering into or through something; "the penetration of upper management by women"