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

Adjective

XXI

  1. Twenty-first.
    XXI Century
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