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1. Oxford American Dictionary

   Roman numeral

   • IPA[ˈrōmən ˈno͞om(ə)rəl]

   美式

   • n.
     any of the letters representing numbers in the Roman numerical system: I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1,000. In this system, a letter placed after another of greater value adds (thus XVI or xvi is 16), whereas a letter placed before another of greater value subtracts (thus XC or xc is 90).

   • noun: Roman numeral, plural noun: Roman numerals

2. • 更多解釋

   Roman numeral

   英式

   • n.
     any of the letters representing numbers in the Roman numerical system: I = 1, V = 5, X = 10, L ...

   Oxford Dictionary