What defines the term the idea that ones culture is superior to all other cultures?

The term that defines the belief that one's culture is superior to all others is "ethnocentrism." This perspective often leads individuals or groups to evaluate other cultures based on the standards of their own, resulting in a biased view that can foster discrimination and cultural misunderstanding. Ethnocentrism can manifest in various forms, including attitudes, behaviors, and policies that privilege one culture over others, ultimately hindering cross-cultural dialogue and appreciation.