ethnocentric (adj.)

"believing that one's own nation is the center of civilization," 1891, from ethno- + -centric; a technical term in social sciences until it began to be more widely used in the second half of the 20th century. Related: Ethnocentricity; ethnocentrism (1902).

Dr. Gumplowicz, professor of sociology at the University of Gratz, says that there are illusions which have been most baneful in the wider life of the world. He mentions two of them which, with real German facility for coining new names, he calls "acrochronism" and "ethnocentrism." ["Address of Professor J.C. Bracq," in "The Eighth Lake Mohonk Arbitration Conference," May 28, 1902; he adds, "Acrochronism is the illusion which leads us to think that what we are doing is the culminating point of some great process."]