# ordinal number

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Related to Ordinal numbers: Cardinal numbers

## ordinal number

**1.**a number denoting relative position in a sequence, such as

*first, second, third*

**2.**

*Logic*

*Maths*a measure of not only the size of a set but also the order of its elements

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

## ordinal number

[′ȯrd·nəl ′nəm·bər] (mathematics)

A generalized number which expresses the size of a set, in the sense of “how many” elements.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

## ordinal number

The number that identifies the sequence of an item, for example, record #34. Contrast with cardinal number.Copyright © 1981-2019 by

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