ordinal numbers

Numbers that indicate the order or position of something in a group or set, such as first, second, or fifteenth. ( Compare cardinal numbers .)

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A full stop is placed after most abbreviations, after initial letters, and after ordinal numbers in Roman characters.

The notion of an “aggregate” in general underlies the system of ordinal numbers.

The definition is effected by means of the system of ordinal numbers (see Number).

The Ordinal Numbers are formed by adding the adjectival ending -a to the Cardinals.

The affected use of cardinal, instead of ordinal numbers, ought not to be imitated.

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