# Ordinal-number

**noun**

1.

Also called ordinal numeral. any of the numbers that express degree, quality, or position in a series, as first, second, and third (distinguished from ).

2.

Mathematics. a symbol denoting both the cardinal number and the ordering of a given set, being identical for two ordered sets having elements that can be placed into one-to-one correspondence, the correspondence preserving the order of the elements.

**noun**

1.

a number denoting relative position in a sequence, such as first, second, third Sometimes shortened to ordinal

2.

(logic, maths) a measure of not only the size of a set but also the order of its elements

ordinal number

(ôr’dn-əl)

A number, such as 3rd, 11th, or 412th, used in counting to indicate position in a series but not quantity. Compare cardinal number.

Tagged: o

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