A number defining the position of something in a series, such as ‘first’, ‘second’, or ‘third’. Ordinal numbers are used as adjectives, nouns, and pronouns.
序数。比较CARDINAL NUMBER
Compare with cardinal number
Example sentencesExamples
His work on ordered sets and ordinal numbers is fundamental to the subject.
However, it was not to be, but the second paper describes his theory of well-ordered sets and ordinal numbers.
We should say immediately that the ancient Greeks had different systems for cardinal numbers and ordinal numbers so we must look carefully at what we mean by Greek number systems.
This pattern of language differences for ordinal numbers is reminiscent of findings for cardinal numbers in a number of ways.
It basically revolves round the set of all ordinal numbers.
Definition of ordinal number in US English:
ordinal number
nounˈôrdnəl ˈnəmbər
A number defining a thing's position in a series, such as “first,” “second,” or “third.” Ordinal numbers are used as adjectives, nouns, and pronouns.
序数。比较CARDINAL NUMBER
Compare with cardinal number
Example sentencesExamples
His work on ordered sets and ordinal numbers is fundamental to the subject.
It basically revolves round the set of all ordinal numbers.
However, it was not to be, but the second paper describes his theory of well-ordered sets and ordinal numbers.
We should say immediately that the ancient Greeks had different systems for cardinal numbers and ordinal numbers so we must look carefully at what we mean by Greek number systems.
This pattern of language differences for ordinal numbers is reminiscent of findings for cardinal numbers in a number of ways.