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eighteen

American  
[ey-teen] / ˈeɪˈtin /

noun

  1. a cardinal number, ten plus eight.

  2. a symbol for this number, as 18 or XVIII.

  3. a set of this many persons or things.


adjective

  1. amounting to 18 in number.

eighteen British  
/ ˈeɪˈtiːn /

noun

  1. the cardinal number that is the sum of ten and eight and the product of two and nine See also number

  2. a numeral, 18, XVIII, etc, representing this number

  3. the amount or quantity that is eight more than ten

  4. something represented by, representing, or consisting of 18 units

  5. (functioning as singular or plural) a team of 18 players in Australian Rules football

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

determiner

    1. amounting to eighteen

      eighteen weeks

    2. ( as pronoun )

      eighteen of them knew

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of eighteen

before 1000; Middle English ehtetene, Old English eahtatēne; cognate with Old Norse āttjān, German achtzehn. See eight, -teen

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“I was bound to work with the family until I was eighteen. But once Auntie Matchmaker found your ba for me, I told the tai-tai about the trouble with her husband. She let me go.”

From Literature

The setup of Helen’s switchboard is identical to mine; I am not more than eighteen inches away from where I usually sit.

From Literature

"And I am not a girl. I'm eighteen years old. I'm a woman."

From Literature

She arranged her bag, checked her hair, put on lipstick that made her look about eighteen years old!

From Literature

“This particular Butterfly was modeled after a real one caught by our commander in chief about eighteen years ago. He was one of the first members of Mayhem we ever caught.”

From Literature