Roman numeral ro·man·nu·meral uncommon noun 1. a symbol in the old Roman notation; I,V,X,L,C,D,M represent 1,5,10,50,100,500,1000 respectively in Arabic notation SynonymsRoman numeral AntonymsArabic numeral Related words Broader terms numeral WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
