eighteen

[ ey-teen ]

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

/ ˈeɪˈtiːn /

noun

1. See number
   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

determiner

1. 1. amounting to eighteen

      eighteen weeks

   2. ( as pronoun )

      eighteen of them knew

Word History and Origins

Origin of eighteen¹

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

Word History and Origins

Origin of eighteen¹

Old English eahtatēne; related to Old Norse attjan, Old High German ahtozehan

Example Sentences

So many eighteen-year-old girls,” says Oliona, “breathing down my neck.

From The Daily Beast

In November 1885, the sudden death of her eighteen year-old daughter, Annie, brought Mandelbaum back to New York City.

From The Daily Beast

By 1953, the number of Americans owning their own homes climbed to twenty-five million, up from eighteen million in 1948.

From The Daily Beast

Eighteen years old, and got hit with an IED his first month there.

From The Daily Beast

The Tambora warming of the poles was connected to the sudden flurry in expeditions that you get in the late eighteen-teens.

From The Daily Beast

He was a member of the first provincial congress, and eighteen years lieutenant governor of the state of New York.

From Project Gutenberg

He was a boy of eighteen, aching over his first love affair; and she was divinely mothering him.

From Project Gutenberg

At this period it brought enormous prices, the finest selling at from fifteen to eighteen shillings per pound.

From Project Gutenberg

If the paper is about twelve by eighteen inches this will accommodate moderate examples of most of the fronds.

From Project Gutenberg

One day in April the thermometer suddenly rose to eighteen above the freezing-point of Fahrenheit.

From Project Gutenberg