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English definition of “twelfth”

twelfth

ordinal number uk   /twelfθ/ us  
12th written as a word: Our next meeting is on the twelfth (of May).

twelfth

noun [C] uk   /twelfθ/ us  
one of twelve equal parts of something: An inch is one twelfth of a foot.
(Definition of twelfth from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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