- Roman numerals are defined as combinations of the letters I, V, X, L, C, D and M which are used in various orders to stand for a specific number.
An example of a Roman numeral is IX which stands for the number 9.
Roman numerals for the number eight.
Roman numerals definition by Webster's New World
Roman numerals - Cultural Definition
Letters of the alphabet used in ancient Rome to represent numbers: I = 1; V = 5; X = 10; L = 50; C = 100; D = 500; M = 1000. The numbers one through ten are written I, II, III, IV, V, VI, VII, VIII, IX, and X. Roman numerals are often used to signify divisions of a long work, or of a work with many parts. They are also used to lend significance to something, as in Super Bowl VII. Formal designation of years may also be in Roman numerals: a.d. MCMLXXXIX = a.d. 1989.