say it: wuhn-THURD
one-third is a noun meaning "one of three equal parts of a divisible whole". It carries one recorded sense.
one of three equal parts of a divisible whole
“it contains approximately a third of the minimum daily requirement”
Definitions, synonyms and semantic relations for one-third 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.