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Definition of secretion noun from the Oxford Advanced American Dictionary

     

    secretion

     noun
    noun
    NAmE//sɪˈkriʃn//
     
    (technology)
     
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  1. 1[uncountable] the process by which liquid substances are produced by parts of the body or plants the secretion of bile by the liver
  2. 2[countable, usually plural] a liquid substance produced by parts of the body or plants bodily secretions
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