What does ordinal mean?
An ordinal is a number or numeral that indicates position in a sequence rather than simply telling us how much there is. Words such as first, second, third, and last are ordinals, and ordinal indicators including first, second, and third are used in formal numbering systems. The term also describes ranks, places, and other concepts based on order, as in an ordinal position or an ordinal title. Ordinal numbers are distinct from cardinal numbers: first indicates sequence, while one indicates quantity. Although the same forms can sometimes replace cardinal numbers in informal contexts, the distinction is especially important in mathematics, dates, rankings, catalogues, and official documents. Understanding ordinals is essential whenever exact sequence or hierarchy matters.
A number or numeral that indicates a position in a sequence, such as first, second, or last.
"The date was entered using an ordinal in the registration form."
Also refers to a rank or place in an ordered series, especially in formal or institutional contexts.
Relating to order, sequence, or rank.
"The committee uses ordinal indicators to organize the recommendations."
The adjective is especially common in technical, formal, and institutional language.
The plural is used for the different numbers or positions in a sequence.
"The first and last ordinals indicate the beginning and end of the list."
Ordinal numbers turn a simple list into a race track: first, second, and third tell us not just how many there are, but exactly who came out ahead.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does ordinal come from?
Ordinal comes from Latin ordinalis, meaning “of or relating to order,” which was formed from ordo, meaning “order, rank, or succession.” The English word entered use in the late 15th century, initially in contexts involving order and succession. English order, ordinary, and ordinance also reflect the same Latin root through related forms.
Related word forms
How ordinal is actually used
Ordinals are commonly used with nouns such as number, place, position, and indicator. In formal and technical writing, they distinguish sequence from quantity; in everyday speech, some speakers use ordinal forms such as first and second when referring to the corresponding numbers generally.
Easily confused with ordinal
An ordinal number indicates position in a sequence, whereas a cardinal number indicates quantity, such as three or ten.
Ordinal concerns order or sequence, while ordinary means common or unexceptional.