eth·​nos | \ˈethˌnäs\
plural -es

Definition of ethnos 

: an ethnic group — compare demos

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First Known Use of ethnos

1870, in the meaning defined above

History and Etymology for ethnos

Greek, nation, people, caste, tribe; probably akin to Greek ēthos custom

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The first known use of ethnos was in 1870

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something that serves to warn or remind

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