Definition of permeation noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˌpɜːmiˈeɪʃn//
    ; NAmE NAmE//ˌpɜːrmiˈeɪʃn//
    [uncountable] permeation (+ adv./prep.) (formal)
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  1. 1the process of a liquid, gas, etc. spreading to every part of an object or a place The product's solvent, ethanol, may enhance its permeation through the skin.
  2. 2the fact of affecting every part of something the growing permeation of online social networks in our everyday life