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English definition of “ordinal”

ordinal

noun [C] uk   /ˌɔː.dɪ.nəl/ us    /ˌɔːr.dən.əl/ (also ordinal number)
a number such as 1st, 2nd, 3rd, 4th, that shows the position of something in a list of things: Ordinal numbers are used in these sentences: 'She was fifth in the race' and 'They celebrated the 200th anniversary of the university's foundation'. Numbers generally
(Definition of ordinal from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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