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Line breaks: eight|een
Pronunciation: /eɪˈtiːn
, ˈeɪtiːn

Definition of eighteen in English:

cardinal number

1Equivalent to the product of two and nine; one more than seventeen, or eight more than ten; 18: she wrote eighteen novels out of sixty batches checked, eighteen were incorrect eighteen of the guests were gathered (Roman numeral: xviii or XVIII)
More example sentences
  • I paid with a twenty and got seventeen or eighteen dollars in change.
  • Seventeen out of eighteen provinces were in open revolt.
  • It was submitted that his decision in the claimant's case to extend the period of nine months to eighteen months was a matter of judgement which was within his discretion.
1.1A set or team of eighteen individuals.
Example sentences
  • The bunkers were in an unbelievable condition no doubt due to the efforts by the ground keepers on the other eighteen which made them almost unplayable.
  • They lost three, including the first of the tour, an innings defeat by a Victorian eighteen.
  • This panel was reduced and Aoife found herself in the last eighteen.
1.2Eighteen years old: he was barely eighteen
More example sentences
  • She was barely eighteen, apparently, and looked younger.
  • I was eighteen and I barely knew anything about the world around me!
  • John emigrated to England at the age of eighteen.
1.3A size of garment or other merchandise denoted by eighteen.
Example sentences
  • She stocks sizes eight to eighteen and takes orders for bigger sizes.
  • Judging by old photos of her, she looked to be about a size eighteen.
1.4 (18) British (Of a film) classified as suitable for people of 18 years and over.


Old English e(a)htatēne (see eight, -teen).



ordinal number
Example sentences
  • In the eighteenth century the Dutch lost their position as an important maritime power to England.
  • Until the middle of the eighteenth century, the majority of all books published were religious in nature.
  • He began the trial on his eighteenth birthday, the day he became eligible to participate.

Definition of eighteen in:

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