Definition of Roman numeral
: a numeral in a system of notation that is based on the ancient Roman system — see Table of Numbers
Test Your Vocabulary
Words Named After People
-
- Namesake of the leotard, Jules Léotard had what profession?

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share Roman numeral
Time Traveler for Roman numeral
The first known use of Roman numeral was circa 1638
See more words from the same year