Real Dictionary

Roman numerals in American English
the Roman letters used as numerals until the 10th cent. a.d.: in Roman numerals I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, and M = 1,000 Other numbers are formed from these by adding or subtracting: the value of a symbol following another of the same
plural noun: the numerals in the ancient Roman system of notation, still used for certain limited purposes, as in some pagination, dates on buildings, etc. The common basic symbols are I (=1), V (=5), X (=10), L (=50), C (=100), D (=500), and M (=1000). The Roman nume

Roman numerals in British English
plural noun: the letters used by the Romans for the representation of cardinal numbers, still used occasionally today. The integers are represented by the following letters: I (= 1), V (= 5), X (= 10), L (= 50), C (= 100), D (= 500), and M (= 1000). If a numeral is fo