Definition of heterogeneous adjective from the Oxford Advanced Learner's Dictionary

 

heterogeneous

 adjective
adjective
BrE BrE//ˌhetərəˈdʒiːniəs//
 
; NAmE NAmE//ˌhetərəˈdʒiːniəs//
 
(formal)
 
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consisting of many different kinds of people or things the heterogeneous population of the United States opposite homogeneous Word Origin early 17th cent.: from medieval Latin heterogeneus, from Greek heterogenēs, from heteros ‘other’ + genos ‘a kind’.Extra examples a fairly heterogeneous group of students socially heterogeneous individuals She cited the heterogeneous population of the United States to support her argument.
See the Oxford Advanced American Dictionary entry: heterogeneous