thirtieth Meaning in the Cambridge English Dictionary
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Meaning of “thirtieth” in the English Dictionary

"thirtieth" in British English

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thirtiethordinal number

uk   /ˈθɜː.ti.əθ/  us   /ˈθɝː.t̬i-/
30th written as a word

thirtiethnoun [C]

uk   /ˈθɜː.ti.əθ/  us   /ˈθɝː.t̬i-/
one of 30 ​equalparts of something
(Definition of thirtieth from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"thirtieth" in American English

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thirtiethadjective, adverb, noun [C]

 us   /ˈθɜr·t̬i·ɪθ/
(in the ​position of) the ​number 30 in a ​series; 30th: Ashley’s having a ​party to ​celebrate her thirtieth ​birthday. [C] Today is the thirtieth of ​September. A thirtieth is one of thirty ​equalparts of something.
(Definition of thirtieth from the Cambridge Academic Content Dictionary © Cambridge University Press)
Translations of “thirtieth”
in Chinese (Simplified) 第三十…
in Chinese (Traditional) 第三十…
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