Definition of ordinal number in English:

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ordinal number

Pronunciation: /ˈôrdnəl ˈnəmbər/

noun

A number defining a thing’s position in a series, such as “first,” “second,” or “third.” Ordinal numbers are used as adjectives, nouns, and pronouns. Compare with cardinal number.
Example sentences
  • We should say immediately that the ancient Greeks had different systems for cardinal numbers and ordinal numbers so we must look carefully at what we mean by Greek number systems.
  • However, it was not to be, but the second paper describes his theory of well-ordered sets and ordinal numbers.
  • It basically revolves round the set of all ordinal numbers.

For editors and proofreaders

Syllabification: or·di·nal num·ber

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