1. XX

noun. (genetics) normal complement of sex chromosomes in a female.

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2. xx

adjective. denoting a quantity consisting of 20 items or units.


  • twenty
  • cardinal


  • unimportant
  • fifty-fifth
  • forty-third

3. XX

noun. the cardinal number that is the sum of nineteen and one.


  • 20
  • twenty

Example sentences of the word xx

1. Foreign word
You must spell out the dollar amount, but you can list any cents amount in the payment as "xx/100"; "xx" stands for the number of cents to be paid.