ethnosectarian /ɛθnə(ʊ)sɛkˈtɛəɹɪən/ adjective1 •Being both sectarian and specific to ethnic identities.Given that military intervention has deepened rather than weakened ethnosectarian divisions, the intriguing question becomes whether that was the game plan all along. — 2006 formsmore ethnosectarian · most ethnosectarian