1 [countable usually singular] formal
a large number of different things
the plurality of factors affecting the election
2 [uncountable and countable] especially American English technicalPPV
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] technicalSLG
when a noun is plural