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Roman numeral

Roman numeral

 
pronunciation:
ro mn nu m rl
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part of speech: noun
definition: any of the letters I, V, X, L, C, D, or M, used in the Roman system of notation, in which a letter followed by one of equal or lesser value indicates addition of the two, a letter followed by one of greater value indicates that the first is to be subtracted from the second, and a bar over a letter multiplies it by 1,000.
The Roman numeral for 15 is XV and for 4 is IV.
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  number