XXI

See also: xxi

Translingual

Alternative forms

• xxi
• xxj (archaic)

Etymology

Compound of the following Roman numerals: XX (“20”) +‎ I (“1”).

Numeral

XXI

1. A Roman numeral representing the number twenty-one (21).

Coordinate terms

• Previous: XX (twenty, 20)
• Next: XXII (twenty-two, 22)

Descendants

• ⇒ English: XXIth

Adjective

XXI

1. Twenty-first.

   XXI Century