harmonization - definition and synonyms

noun 

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/ˌhɑː(r)mənaɪˈzeɪʃ(ə)n/
singularharmonization
pluralharmonizations
  1. 1
    [uncountable] the act or practice of making laws or policies similar to those of a different country or organization

    the harmonization of generic drugs regulation across Asia

  2. 2
    [countable/uncountable] music the act of singing or playing different notes at the same time, producing a pleasant combination of sounds, or sounds that are produced in this way

    The harmonizations are different the second and third times around.