A numeral represented using a Roman system involving the letters I, V, X, L, C, D, and M. / (in the plural) The system using such letters.

A number used as an adjective; either a cardinal adjective (such as one) or an ordinal adjective (such as third)

One of the Greek numerals. A symbol formed from one or more of the letters of the Greek alphabet which has been modified by the addition of a mark, thus: Δ' θ'. These are used to numerate monarchs, chapters, etc as Roman numerals are used in English.

(mathematics) The study of algorithms to solve mathematical problems concerning continuous sets of values (such as the real numbers, complex numbers or vector spaces).

(grammar) A word used to represent a cardinal number.

(arithmetic) Any of the symbols 〇 (or 零), 一, 二, 三, 四, 五, 六, 七, 八, 九, 十, 百, 千, 萬 / 万, 億 / 亿, etc. used to represent numbers in Chinese-speaking countries/areas, Japan, at some stage in Korea and Vietnam.

A representation of a natural number using lambda notation.

(grammar) A noun that represents a number

A written form of a number, based on its physical representation with counting rods.

plural of numeric promotion