It is evident that the ordinal similarity of two relations implies the cardinal similarity of their fields, but not conversely.
ordinal—That form of the numeral that shows the order of anything in a series.
In computing time, ordinal numbers are reckoned the same as cardinal numbers.
If the ordinal expression of number be used on the title-page, the figures may be given, and the ordinal termination omitted.
The ordinal numbers should have no adverbial form: "firstly," "secondly," and the rest are words without meaning.
ordinal numerals are adjectives which answer the question "Which in order?"
There is no proof of any ratification ever having been made by Rome of any ordinations according to the Anglican ordinal.
He was not given the title of king, and no ordinal number followed his name.
The notion of an “aggregate” in general underlies the system of ordinal numbers.
A full stop is placed after most abbreviations, after initial letters, and after ordinal numbers in Roman characters.
early 14c., "book setting forth the order of services in the Church," from Late Latin adjective ordinalis (see ordinal (adj.)).
late 14c., "regular, ordinary," from Old French ordinel and directly from Late Latin ordinalis ""showing order, denoting an order of succession," from Latin ordo (genitive ordinis) "row, series" (see order (n.)). Meaning "marking position in an order or series" is from 1590s.
mathematics
An isomorphism class of well-ordered sets.
(1995-03-10)