Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

Comprehensive
Dictionary Suite
Help
Help
Help
 
Intermediate Dictionary
   
Display options
Show syllables
Show Lookup History
Double-Click Lookup
Show Word Parts
  Show Spanish support
 
Pronunciation
Wordsmyth
  Phonics
  IPA
 
Entry formats
Standard
  Classic
 
Lookup History
Roman numeral

Roman numeral

 
pronunciation:
ro mn nu m rl
features:
Word Explorer
part of speech: noun
definition: a letter used as a number in the ancient Roman number system. The letter I equals 1, V equals 5, X equals 10, L equals 50, C equals 100, D equals 500, and M equals 1,000. In this system, a letter followed by one of equal or lesser value means the two are added; seven is VII, or 5+1+1. A letter followed by one of greater value means that the first is subtracted from the second; four hundred is CD, or 500-100.
The Roman numeral for 15 is XV and for 4 is IV.The United Nations was founded in 1945, or in Roman numerals, MCMXLV.
Word Explorer
See
  number