Definition of ordinal noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈɔːdɪnl//
; NAmE NAmE//ˈɔːrdənl//
(also ordinal number)
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a number that refers to the position of something in a series, for example ‘first’, ‘second’, etc. compare cardinal Word OriginMiddle English (referring to a service book in the Christian church): the noun from medieval Latin ordinale (neuter); the adjective from late Latin ordinalis ‘relating to order in a series’, from Latin ordo, ordin- ‘row, series, rank’.

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