Definition

1. Adjective:

   • Being one more than twenty: The word "xxi" describes the quantity that is exactly twenty plus one. It is a numeral representing the number 21.

2. Noun:

   • The cardinal number that is the sum of twenty and one: "xxi" is the name or symbol for the number 21, representing a count or quantity.

Usage Examples

• Adjective:

  • The book has xxi chapters. (The book has twenty-one chapters.)
  • She is xxi years old. (She is twenty-one years old.)

• Noun:

  • The answer on the final line was xxi. (The answer on the final line was twenty-one.)
  • XXI is written in Roman numerals. (Twenty-one is written in Roman numerals.)

Advanced Usage

• Roman Numeral: "xxi" (or "XXI") is the standard Roman numeral for the number 21.
  • The copyright date was listed as MCMLXXI. (The copyright date was listed as 1971, where 'xxi' represents the '21' in 1971.)

Variants and Related Words

• Twenty-one (n, adj): The standard English word for the number 21.
• 21 (n, adj): The Arabic numeral representation.
• XXI (n, adj): The uppercase Roman numeral form.

Synonyms

• Twenty-one: The direct and most common synonym.
• Score and one: An archaic or literary way to express the number (a 'score' is twenty).

Adjective

1. being one more than twenty

Noun

1. the cardinal number that is the sum of twenty and one