Definition of "permeation" [per•me•a•tion]

• The movement of a fluid through a porous or permeable solid. (noun)
• The spreading of something (especially something malignant) through the body via blood vessels etc. (noun)

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• "Socialist, rejected the Marxian in favour of Jevonsian economics, and devoted itself to the social education of the public by means of lectures, pamphlets and books, and to the spread of Collectivist ideas by the "permeation" of public bodies and political parties."
• "Podmore as Secretary for Oxford and G.W. Johnson for Cambridge, had begun the "permeation" of the Universities, which has always been an important part of the propaganda of the Society."
• "a kind of permeation that goes beyond anything verbal."