[Cau.ca.sian] adj (1807) 1: of or relating to the Caucasus or its inhabitants
2. a: of or relating to the white race of humankind as classified according to physical features b: of or relating to the white race as defined by law specif. as composed of persons of European, No. African, or southwest Asian ancestry -- Caucasian n -- Cau.ca.soid adj or n