plu ‧ ral ‧ i ‧ ty /plʊˈræləti, plʊˈrælɪti/ BrE AmE noun ( plural pluralities )
1 . [countable usually singular] formal a large number of different things
plurality of
the plurality of factors affecting the election
2 . [uncountable and countable] especially American English technical if one person or party receives a plurality in an election, they receive more votes than any of the other people or parties, but fewer votes than the total number of votes that all the others receive together:
The Democrats won only a plurality of the votes cast.
3 . [uncountable] technical when a noun is plural