Definitions from Wiktionary (ordinal number)

▸ noun:  (grammar) A word that expresses the relative position of an item in a sequence.
▸ noun:  (arithmetic) A natural number used to denote position in a sequence.
▸ noun:  (set theory) Such a number generalised to correspond to any cardinal number (the size of some set); formally, the order type of some well-ordered set of some cardinality a, which represents an equivalence class of well-ordered sets (exactly those of cardinality a) under the equivalence relation "existence of an order-preserving bijection".
▸ Also see ordinal_number



▸ Words similar to ordinal numbers
▸ Usage examples for ordinal numbers

▸ Idioms related to ordinal numbers
▸ Wikipedia articles (New!)
▸ Words that often appear near ordinal numbers
▸ Rhymes of ordinal numbers

▸ Invented words related to ordinal numbers