Definition of ethnicity noun from the Oxford Advanced American Dictionary

      

    ethnicity

     noun
    noun
    NAmE//ɛθˈnɪsət̮i//
     
    (pl. ethnicities)(technology)
     
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  1. 1[uncountable] the fact of belonging to a particular race or culture Many factors are important, for example class, gender, age, and ethnicity.
  2. 2[countable, usually plural] (formal) a group of people with a common cultural or national tradition We’re trying to recruit people of different races and ethnicities.
See the Oxford Advanced Learner's Dictionary entry: ethnicity