say it: plur-AL-i-tee
plurality is a noun meaning "the state of being plural". It carries 3 recorded senses.
the state of being plural
“to mark plurality, one language may add an extra syllable to the word whereas another may simply change the vowel in the existing final syllable”
a large indefinite number
“a battalion of ants”
“a multitude of TV antennas”
“a plurality of religions”
(in an election with more than 2 options) the number of votes for the candidate or party receiving the greatest number (but less that half of the votes)
election
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for plurality come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.