con·stitu·encyAW [constituencyconstituencies] BrE [kənˈstɪtjuənsi] NAmE [kənˈstʃuənsi] (pl. con·stitu·encies) noun 1. (especially BrE)countable a district that elects its own representative to parliament •Unemployment is high in her constituency. •He owns a house in his Darlington constituency. 2. countable singular or plural verb the people who live in and vote in a particular district •constituency opinion 3. countable singular or plural verb a particular group of people in society who are likely to support a person, an idea or a product •There is a strong constituency of support for his proposal.