Ordinal number

/ˈɔːdɪnəl nˈʌmbə/

/ˈɔːɹdɪnəl nˈʌmbɚ/

Ordinal number

a number that indicates the position of something in a sequence or series

synonyms : no.

Examples

1. They're wonderful things, Cantor's ordinal numbers.

2. They also include Cantor's infinite ordinal numbers, which are not very familiar to people.

3. It's very rare to see an unabbreviated ordinal number in a written date.

4. Then, we have the ordinal numbers: first, second, third, fourth, fifth.