What does ordinal number mean?

Definitions for ordinal number

Here are all the possible meanings and translations of the word ordinal number.

Princeton's WordNet

  1. ordinal number, ordinal, no.(noun)

    the number designating place in an ordered sequence


  1. ordinal number(Noun)

    A word that expresses the relative position of an item in an ordered sequence.

  2. ordinal number(Noun)

    A number used to denote position in a sequence.

  3. ordinal number(Noun)

    A generalized kind of number to denote the size of a well-ordered set.


  1. Ordinal number

    In set theory, an ordinal number, or just ordinal, is the order type of a well-ordered set. They are usually identified with hereditarily transitive sets. Ordinals are an extension of the natural numbers different from integers and from cardinals. Like other kinds of numbers, ordinals can be added, multiplied, and exponentiated. Ordinals were introduced by Georg Cantor in 1883 to accommodate infinite sequences and to classify sets with certain kinds of order structures on them. He derived them by accident while working on a problem concerning trigonometric series—see Georg Cantor. Two sets S and S' have the same cardinality if there is a bijection between them If a partial order < is defined on set S, and a partial order


  1. Chaldean Numerology

    The numerical value of ordinal number in Chaldean Numerology is: 2

  2. Pythagorean Numerology

    The numerical value of ordinal number in Pythagorean Numerology is: 2

Images & Illustrations of ordinal number

  1. ordinal numberordinal numberordinal number

Translations for ordinal number

From our Multilingual Translation Dictionary

Get even more translations for ordinal number »


Find a translation for the ordinal number definition in other languages:

Select another language:

Discuss these ordinal number definitions with the community:

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:     


Use the citation below to add this definition to your bibliography:


"ordinal number." Definitions.net. STANDS4 LLC, 2018. Web. 20 Mar. 2018. <https://www.definitions.net/definition/ordinal number>.

Are we missing a good definition for ordinal number? Don't keep it to yourself...

Nearby & related entries:

Alternative searches for ordinal number:

Thanks for your vote! We truly appreciate your support.