ordinal number

Definition of Ordinal Number in English :

1. no., ordinal, ordinal number

the number designating place in an ordered sequence

WordNet Lexical Database for English. Princeton University. 2010.

Ordinal Number

noun

1.

a number denoting relative position in a sequence, such as first, second, third

. Sometimes shortened to: ordinal

2. logic, mathematics

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

any number used to indicate order (e.g., second, ninth, 25th) in a particular series

n.

A number indicating position in a series or order. The ordinal numbers are first (1st), second (2nd), third (3rd), and so on.