(mathematics) A numeral system that uses digits to establish a bijection between finite strings and the positive integers, especially by k-adic notation such as unary and decimal without a zero.

(arithmetic) Any of the ten symbols 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 used to represent numbers.

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.

(uncountable) The system of numerals using Roman numerals.

plural of Roman numeral

A system of numerals represented by letters of the Greek alphabet. These are used for special purposes, where in English Roman numerals might be used. The numerals are formed by the addition of a mark to the upper or lower case letter, i.e. Γ΄, δ΄, θ΄. In addition to the usual Greek letters three additional symbols are used: stigma (ϛ), koppa (ϟ) and sampi (ϡ); stigma (Ϛ or ϛ) may also be represented by ΣΤ΄ or στ΄.

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.

plural of Arabic numeral

plural of cardinal numeral

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