referendum
US /ˌref.əˈren.dəm/
UK /ˌref.əˈren.dəm/

1.
референдум, всенародное голосование
a general vote by the electorate on a single political question that has been referred to them for a direct decision.
:
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The country held a referendum on joining the European Union.
Страна провела референдум о вступлении в Европейский Союз.
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The government promised to hold a referendum on the new constitution.
Правительство пообещало провести референдум по новой конституции.