Ordinal

An ordinal numeral is a word representing the rank of a number: "first", "second", "third", and so on.

Ordinal may also refer to:

Mathematics and science

• Ordinal number, an extension of ordinal numerals used to enumerate infinite sets
• Ordinal scale, ranking things that are not necessarily numbers
• Ordinal data, a statistical data type consisting of numerical scores that exist on an arbitrary numerical scale
• Ordinal Priority Approach, a multiple-criteria decision analysis method that aids in solving the group decision-making problems
• Ordinal utility (economics): a utility function which is used only to describe the preference ordering between different outcomes.

Religion

• Ordinal (liturgy), particularly in Anglicanism, Lutheranism and Catholicism, is the book containing the rites for the ordination of deacons and priests, and the consecration of bishops
  • Edwardine Ordinals, two early liturgical books of the Church of England
• Ordinal can be a book that gives the ordo (ritual and rubrics) for celebrations, see Order of Mass

Other uses

• Ordinal indicator, the sign adjacent to a numeral denoting that it is an ordinal number
• Ordinal date, a simple form of expressing a date using only the year and the day number within that year
• Regnal ordinal, used to distinguish monarchs and popes with the same regnal name