Longman Dictionary of Contemporary English homepage

Language: Old English
Origin: eahtatiene, from eahta 'eight' + tien 'ten'

eighteen

 number
     
Related topics: Numbers
eigh‧teen
HMN the number 18:
At least eighteen bullets were fired.
Jim was eighteen (=18 years old).
—eighteenth adjective, pronoun:
in the eighteenth century
her eighteenth birthday
I'm planning to leave on the eighteenth (=the 18th day of the month).
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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