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]

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

Ordinal numbers in English show the position or order of things—like first, second, third, and so on. They’re used all the time in everyday English, whether you’re talking about dates, competitions, …

Mar 20, 2023 · The next type of measurement scale that we can use to label variables is an ordinal scale. Ordinal scale: A scale used to label variables that have a natural order, but no quantifiable …

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

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.

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 - …

Feb 14, 2026 · 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 …

"Ordinal" is like the tidy librarian of the vocabulary world, keeping everything in its proper place. It's all about order and rank – whether you're looking at the 1st, 2nd, or 3rd spot in a list.

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.