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

      

    maturation

     noun
    noun
    BrE BrE//ˌmætʃuˈreɪʃn//
     
    ; NAmE NAmE//ˌmætʃuˈreɪʃn//
     
    [uncountable](formal) Middle age
     
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  1. 1the process of becoming or being made mature (= ready to eat or drink after being left for a period of time)
  2. 2the process of becoming adult See related entries: Middle age
  3. Word Origin late Middle English (denoting the formation of pus): from medieval Latin maturatio(n-), from Latin maturare, from maturus ‘timely, ripe’.
See the Oxford Advanced American Dictionary entry: maturation