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 2, 2026 · However, most numbers end with -th, including 9, which becomes 9th. Let’s look at an example: when talking about birthdays, you would say “9th birthday” not “9st birthday”. This rule …

A Cardinal Number is a number that says how many of something there are, such as one, two, three, four, five. An Ordinal Number is a number that tells the position of something in a list, such as 1st, …

Mar 25, 2024 · "9st" is an incorrect spelling, while "9th" is the correct ordinal representation for the number nine, indicating its position in a sequence.

Aug 23, 2014 · In the case of 9th, the superscript shown is indeed called the 'ordinal indicator' as Matt Gutting has noted in his answer. The addition of -th/ -eth relates to numbers 4 to 20 (and similarly,) …

Jul 18, 2026 · The meaning of NINTH is one that is number nine in a series. How to use ninth in a sentence.

This disambiguation page lists articles associated with the same ordinal. If an internal link led you here, you may wish to change the link to point directly to the intended article.

9 is a Motzkin number: it counts the ways of drawing non-intersecting chords among four points on a circle, allowing some points to remain unmatched. 9 is the sum of the cubes of the first two non-zero …

Ordinal numbers are normally used for: We use ordinal numbers when giving a date. Her birthday is on the 29th. (Twenty-ninth) Their Independence Day is on the 4th of July. (Fourth of July) We use …

9th Add to list Other forms: 9thly Definitions of 9th adjective coming next after the eighth and just before the tenth in position synonyms: ninth