con ‧ sti ‧ tu ‧ en ‧ cy AC /kənˈstɪtʃuənsi/ BrE AmE noun ( plural constituencies ) [countable]
1 . British English an area of a country that elects a representative to a parliament ⇨ seat :
a rural constituency
constituency boundaries
He represents the Essex constituency of Epping Forest.
2 . [ also + plural verb British English ] the people who live and vote in a particular area
3 . any group that supports or is likely to support a politician or a political party:
The trade unions were no longer the constituency of the Labour Party alone.