American English

Definition of gradation noun from the Oxford Advanced American Dictionary



    , NAmE//ɡrəˈdeɪʃn//
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  1. 1[countable, uncountable] (formal) any of the small changes or levels which something is divided into; the process or result of something changing gradually gradations of color gradation in size
  2. 2(also graduation) [countable] a mark showing a division on a scale the gradations on a thermometer
See the Oxford Advanced Learner's Dictionary entry: gradation