Dictionary

eighteen

noun eigh·teen \(ˈ)ā(t)-ˈtēn\

: the number 18

Full Definition of EIGHTEEN

— see number table
eighteen adjective
eighteen pronoun, plural in construction
eigh·teenth \-ˈtēn(t)th\ adjective or noun
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Origin of EIGHTEEN

Middle English eightetene, adjective, from Old English eahtatīene, from eahta + -tīene; akin to Old English tīen ten
First Known Use: before 12th century
EIGHTEENTH Defined for Kids

1eighteen

noun eigh·teen \ā-ˈtēn, ˈāt-ˌtēn\

Definition of EIGHTEEN for Kids

:  one more than 17 :  three times six :  18

2eighteen

adjective

Definition of EIGHTEEN for Kids

:  being one more than 17

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