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

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: of or relating to an order, as of animals or plants. See examples of ordinal used in a sentence.

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 …

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

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.

In linguistics, ordinal numerals or ordinal number words are words representing position or rank in a sequential order; the order may be of size, importance, chronology, and so on (e.g., "third", "tertiary").

1. of or pertaining to an order, as of animals or plants. 2. of or pertaining to order, rank, or position in a series. n. 3. an ordinal number or numeral.