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



    BrE BrE//ɒzˈməʊsɪs//
    ; NAmE NAmE//ɑːzˈmoʊsɪs//
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  1. 1(biology or chemistry) the gradual passing of a liquid through a membrane (= a thin layer of material) as a result of there being different amounts of dissolved substances on either side of the membrane Water passes into the roots of a plant by osmosis.
  2. 2the gradual process of learning or being influenced by something, as a result of being in close contact with it As if by osmosis, the facts became clear over a period of time.
  3. Word Originmid 19th cent.: Latinized form of earlier osmose, from Greek ōsmos ‘a push’.
See the Oxford Advanced American Dictionary entry: osmosis