convention
con·ven·tion / kənˈvenchən/ • n. 1. a way in which something is usually done, esp. within a particular area or activity: the woman who overturned so many conventions of children's literature. ∎ behavior that is considered acceptable or polite to most members of a society: social conventions. ∎ Bridge an artificial bid by which a bidder tries to convey specific information about the hand to their partner.2. an agreement between countries covering particular matters, esp. one less formal than a treaty.3. a large meeting or conference, esp. of members of a political party or a particular profession: a convention of retail merchants. ∎ (in the U.S.) an assembly of the delegates of a political party to select candidates for office. ∎ an organized meeting of enthusiasts for a television program, movie, or literary genre: a Star Trek convention. ∎ a body set up by agreement to deal with a particular issue.