In set theory, an ordinal number, or ordinal, is a generalization of ordinal numerals (first, second, n th, etc.) aimed to extend enumeration to infinite sets. [1] A finite set can be enumerated by successively …

Ordinal [Middle English, from Medieval Latin ordinale, from Late Latin, neuter of ordinalis] : a book of rites for the ordination of deacons, priests, and bishops

ORDINAL definition: 1. a number such as 1st, 2nd, 3rd, 4th, that shows the position of something in a list of things…. Learn more.

Jul 23, 2025 · Ordinal Numbers are numbers that are used to represent position, rank or order in a sequence. They denote the position or order of an element in a sequence, such as "1st - first," "2nd - …

Apr 30, 2025 · Ordinal numbers show position or order, like first, second, and third. Ordinal numbers end with -nd, -rd, -st, or -th, such as 2nd, 3rd, and 1st. When using ordinal and cardinal numbers …

Colloquially, an ordinal number is a number that tells the position of something in a list, such as first, second, third, etc. This basic understanding extends to the meaning of ordinal numbers in set theory.

At each ordinal point, she put a seal in the shape of a five-pointed star made of blue fire. For this reason, ordinal collapsing functions are described as an impredicative manner of naming ordinals. Retrieved …

Definition of ordinal noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Dec 3, 2025 · In formal set theory, an ordinal number (sometimes simply called an "ordinal" for short) is one of the numbers in Georg Cantor's extension of the whole numbers. An ordinal number is defined …

The contexts of some problems called on the cardinal properties of numbers -- the quantity of elements in a set -- others on their ordinal properties -- their position in an ordered list.