eighteen

[ ey-teen ]

/ ˈeɪˈtin /

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noun

a cardinal number, ten plus eight.

a symbol for this number, as 18 or XVIII.

a set of this many persons or things.

adjective

amounting to 18 in number.

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Origin of eighteen

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

Words nearby eighteen

eigenvalue, eigenvector, Eiger, eight, eightball, eighteen, eighteenmo, eighteenth, Eighteenth Amendment, eighteen-wheeler, eightfold

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use eighteen in a sentence

So many eighteen-year-old girls,” says Oliona, “breathing down my neck.
Russia’s Gold Digger Academy|Peter Pomerantsev|November 11, 2014|DAILY BEAST
In November 1885, the sudden death of her eighteen year-old daughter, Annie, brought Mandelbaum back to New York City.
Meet 'The Queen of Thieves' Marm Mandelbaum, New York City's First Mob Boss|J. North Conway|September 7, 2014|DAILY BEAST
By 1953, the number of Americans owning their own homes climbed to twenty-five million, up from eighteen million in 1948.
In the Future We'll All Be Renters: America's Disappearing Middle Class|Joel Kotkin|August 10, 2014|DAILY BEAST
Eighteen years old, and got hit with an IED his first month there.
Who Has the Right to Write About War?|Emily Gray Tedrowe|July 12, 2014|DAILY BEAST

The Tambora warming of the poles was connected to the sudden flurry in expeditions that you get in the late eighteen-teens.
The Volcano That Rewrote History|William O’Connor|May 5, 2014|DAILY BEAST
He was a member of the first provincial congress, and eighteen years lieutenant governor of the state of New York.
The Every Day Book of History and Chronology|Joel Munsell
He was a boy of eighteen, aching over his first love affair; and she was divinely mothering him.
The Wave|Algernon Blackwood
At this period it brought enormous prices, the finest selling at from fifteen to eighteen shillings per pound.
Tobacco; Its History, Varieties, Culture, Manufacture and Commerce|E. R. Billings.
If the paper is about twelve by eighteen inches this will accommodate moderate examples of most of the fronds.
How to Know the Ferns|S. Leonard Bastin
One day in April the thermometer suddenly rose to eighteen above the freezing-point of Fahrenheit.
The Giant of the North|R.M. Ballantyne

British Dictionary definitions for eighteen

eighteen

/ (ˈeɪˈtiːn) /

noun

the cardinal number that is the sum of ten and eight and the product of two and nineSee also number (def. 1)

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

the amount or quantity that is eight more than ten

something represented by, representing, or consisting of 18 units

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

determiner

amounting to eighteeneighteen weeks
(as pronoun)eighteen of them knew

Word Origin for eighteen

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

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