THIRTIETH Definition & Meaning

thirtieth

[ thur-tee-ith ]

Phonetic (Standard)IPA

adjective

next after the twenty-ninth; being the ordinal number for 30.
being one of 30 equal parts.

noun

a thirtieth part, especially of one (1/30).
the thirtieth member of a series.

ˈ�ٳ󾱰��پ��ٳ�

/ ˈθɜː��ɪɪθ /

adjective

usually prenominal
1. being the ordinal number of thirty in counting order, position, time, etc: often written 30th
2. ( as noun )
  the thirtieth of the month

noun

1. one of 30 approximately equal parts of something
2. ( as modifier )
  a thirtieth part
the fraction equal to one divided by 30 ( 1 30 )

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�y��vlog History and Origins

Origin of thirtieth¹

before 900; thirty + -eth ²; replacing Middle English thrittythe, Old English �ٳ��ī�ٱ𲵳ٳ�

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Example Sentences

Examples have not been reviewed.

Wisconsin, a free state, becomes the thirtieth state.

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By the time they reached the thirtieth game, Bobby had won nine games and Spassky five.

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As I listened to the phone ring for about the thirtieth time, suddenly it occurred to me: why not just run up to North Hampden and get it?

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Even in 1801 we can still catch Coleridge resolving that ‘before my thirtieth year I will thoroughly understand the whole of Newton’s works.’

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It’s hard to overlook, for instance, that this movie arrives in theatres in the same year as the thirtieth anniversary of Spike Lee’s “Do The Right Thing.”

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