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Related to ordinal number: cardinal 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]
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 numberThe number that identifies the sequence of an item, for example, record #34. Contrast with cardinal number.
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