third

Main Entry: 1third
Pronunciation: 'th&rd
Function: adjective
Etymology: Middle English thridde, thirde, from Old English thridda, thirdda; akin to Latin tertius third, Greek tritos, treis three -- more at THREE

2 a : being one of three equal parts into which something is divisible b : being the last in each group of three in a series
- third or third·ly adverb