n. Adherence or the tendency to adhere to conventional usages, regulations, and precedents; conventionality; formalism.n. That which is received or established by convention or agreement; a conventional phrase, form, ceremony, etc.; something depending on conventional rules and precepts.n. In anthropology, the tendency of human activities to lose their significance in the course of the development of culture, and to become conventional.n. In the fine arts, the tendency of realistic representations of animals, plants, and other natural forms to become more conventional; in the course of the development of decorative art, the tendency of realistic motives to change into geometrical forms.