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.

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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

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determiner

1. 1. amounting to eighteen

      eighteen weeks

   2. ( as pronoun )

      eighteen of them knew

Etymology

Origin of eighteen

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

Example Sentences

Making up for eighteen years of fighting won’t be easy, but at least Aunt Melissa is letting us stay.

From Literature

Her mama and papa had died when she was eighteen, and she stayed on the farm, keeping a few animals, selling herbs like Violet and I do.

From Literature

This second set of ash reached between ten and eighteen miles from Mount St. Helens and within six minutes had covered an area as big as ten Manhattans laid next to each other.

From Literature

“We were going to wait till you were at least eighteen; your father was arguing for twenty-one, or twenty-five. In truth, I think he’d rather you never knew.”

From Literature

So far I’ve learned about a woman named Cleopatra, who ruled Egypt as queen when she was only eighteen.

From Literature