ordinal
US /ˈɔːr.dən.əl/
UK /ˈɔːr.dən.əl/
1.
a number that indicates the position or order of something in a sequence (e.g., first, second, third)
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Ordinal numbers are used to show rank.
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In the list, 'first' is an ordinal.
1.
of or relating to a number indicating position in a series
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The word 'second' is an ordinal adjective.
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We need to consider the ordinal position of each item.