Eighteenth

Look up 18th in Wiktionary, the free dictionary.

Eighteenth is the ordinal form of the number 18. Eighteenth or 18th may also refer to:

  • A fraction (mathematics), 1⁄18th, equal to one of 18 equal parts
  • 18th of the month
  • 18th birthday, the age of majority in a substantial majority of countries
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