|Origin:||ethnicus, from Greek ethnikos, from ethnos 'nation, people'|
relating to a particular race, nation, or tribe and their customs and traditions:
The school teaches pupils from different ethnic groups.
ethnic Russians in Estonia
ethnic violence/divisions/strife etc (=violence etc between people from different races or cultures)
The students are from a variety of ethnic backgrounds.
plans to partition the republic along ethnic lines (=in a way that keeps different ethnic groups apart)
cooking, fashion etc from countries that are far away, which seems very different and unusual:
Surinam is culturally and ethnically diverse.