ordinal number

Definition

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

Example Sentences

• "First, second and third are the ordinal numbers corresponding to one, two and three."
• "In the expression a₃, the "3" is an ordinal number."
• "1950, Frederick Bagemihl (translator), Erich Kamke, Theory of Sets, Dover (Dover Phoenix), 2006, page 137, For not only do the antinomies a) to e) disappear when we admit as elements of sets only such sets, ordinal numbers, and cardinal numbers as are bounded above by a fixed cardinal number, but we see also that paradoxes always arise if we collect into a set any sets, cardinal numbers, or ordinal numbers which are not bounded above by a fixed cardinal number."

Related Words