Roman numeral


Definition of Roman numeral

: a numeral in a system of notation that is based on the ancient Roman system — see Table of Numbers

Examples of Roman numeral in a Sentence

In Roman numerals “X” is equal to the number 10.

First Known Use of Roman numeral

circa 1638, in the meaning defined above

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Time Traveler for Roman numeral

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The first known use of Roman numeral was circa 1638

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Cite this Entry

“Roman numeral.” The Dictionary, Merriam-Webster Inc., Accessed 9 December 2019.

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More Definitions for Roman numeral

Roman numeral


English Language Learners Definition of Roman numeral

: one of the letters that were used by the ancient Romans to represent numbers and that are still used today

Roman numeral


Kids Definition of Roman numeral

: a numeral in a system of figures based on the ancient Roman system In Roman numerals X equals 10.

More from Merriam-Webster on Roman numeral

Spanish Central: Translation of Roman numeral

Nglish: Translation of Roman numeral for Spanish Speakers

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