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em

1 American  
[em] / ɛm /

noun

ems plural
  1. the letter M, m.

  2. Also called mut, muttonPrinting.

    1. the square of any size of type used as the unit of measurement for matter printed in that type size.

    2. (originally) the portion of a line of type occupied by the letter M in type of the same size.

  3. em pica.


adjective

  1. Printing. having the area of an em quad or the length of an em dash.

'em 2 American  
[uhm] / əm /

pronoun

Informal.
  1. them.

    Put 'em down there.


Em 3 American  
Symbol, Physical Chemistry.
  1. emanation.


EM 4 American  

abbreviation

  1. electromagnetic.

  2. electromotive.

  3. electronic mail.

  4. electron microscope; electron microscopy.

  5. end matched.

  6. Engineer of Mines.

  7. enlisted man; enlisted men.


em- 5 American  
  1. variant of en- before b, p, and sometimes m:

    embalm.


em- 6 American  
  1. variant of en- before b, m, p, ph:

    embolism, emphasis.


E.M. 7 American  

abbreviation

  1. Earl Marshal.

  2. Engineer of Mines.


em 1 British  
/ ɛm /

noun

  1. Also called: mutton.   mut.  the square of a body of any size of type, used as a unit of measurement

  2. Also called: pica em.   pica.  a unit of measurement used in printing, equal to one sixth of an inch

"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

'em 2 British  
/ əm /

pronoun

  1. an informal variant of them

"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

em- 3 British  

prefix

  1. before b, m, and p, a variant of en- 1 en- 2

"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

Other Word Forms

Noun Inflected Forms

Etymology

Origin of em1

First recorded in 1860–65

Origin of 'em2

First recorded in 1350–1400; Middle English hem, Old English heom, dative and accusative plural of he 1

Vocabulary lists containing em

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.

See Examples For:

The turnover ➡️ The easy deuce for Khamenia @DukeMBB makes em pay.

From Los Angeles Times Mar. 30, 2026

Most of all we should use em dashes because they are a declaration of humanity in the face of AI’s onslaught.

From The Wall Street Journal Nov. 20, 2025

Last week, OpenAI CEO Sam Altman posted on X the following brag: “Small-but-happy win: If you tell ChatGPT not to use em dashes in your custom instructions, it finally does what it’s supposed to do!”

From The Wall Street Journal Nov. 20, 2025

The news drew praise from public figures, including Jennifer Lopez, California Governor Gavin Newsom, and Bruno Mars, who wrote on X, “Go get em Bad Bunny!”

From Salon Sep. 29, 2025

The Potomac boys are mitey hifalutin, some of em, and they and the Tennessee boys and us pure hated each other worse than we hated the rebs.

From "Across Five Aprils" by Irene Hunt

Pokémon fans have spent the past three decades trying to catch 'em all - and since the beginning this hunt has often taken place outside the home.

From BBC Jul. 13, 2026

As a witness to the New York Mets’ abysmal inaugural season, Casey Stengel once remarked: “Been in this game one hundred years, but I see new ways to lose ’em I never knew existed before.”

From The Wall Street Journal May 26, 2026

"I think let 'em play," Trump said in late April.

From Barron's May 18, 2026

“Pick ‘em out of line starting today, and maybe the lines will get shorter,” he said.

From Salon Mar. 24, 2026

“These guys are my favorites, out of everything I’ve got here. That’s why I keep ’em hidden.

From "I Can Make This Promise" by Christine Day

Spinner Linsey Smith, all-rounder Em Arlott and batter Paige Scholfield were among the other players to attract fees of more than £100,000.

From BBC Mar. 11, 2026

"Everything on telly was BBC," she said, adding that she grew up watching the sitcom Some Mothers Do Ave Em and Doctor Who, which ignited a love of science fiction.

From BBC Jan. 24, 2026

Much like “Let God Sort Em Out,” the Clipse’s performance further solidified why they’ve been in the game for more than 20 years and why they aren’t going anywhere anytime soon.

From Los Angeles Times Nov. 24, 2025

Further down the ballot, “GNX,” “Chromakopia” and “Let God Sort Em Out” will compete with GloRilla’s “Glorious” and JID’s “God Does Like Ugly” for the rap album award.

From Los Angeles Times Nov. 7, 2025

She glanced at Em, who was texting again.

From "Goodbye Stranger" by Rebecca Stead

Strong performance in the EM space has increasingly been driven by a handful of stocks trading in Taiwan and South Korea, which play host to some of the world’s most influential AI hardware companies.

From MarketWatch Jul. 7, 2026

In pre-market trading Thursday TSMC’s U.S.-listed depositary receipts were 1.87% higher at $440 and the EM ETF was indicating a gain of 2.52% at 70.29.

From MarketWatch Jun. 18, 2026

In pre-market trading Thursday TSMC’s U.S.-listed depositary receipts were 1.87% higher at $440 and the EM ETF was indicating a gain of 2.52% at 70.29.

From MarketWatch Jun. 18, 2026

While the AI trade is usually viewed as confined to the U.S., it’s played a big part in EM as well, particularly in Asia.

From Barron's Feb. 6, 2026

Never mind, EM," she lisped, "everything is bound to come out right.

From Punch, or the London Charivari, Volume 99, November 8, 1890 by Various

Font Bureau even did some customization for us—they provided us with wider em- and en-dashes for our home page headline font, for example, since our headlines are full of em-dashes.

From Slate Sep. 23, 2013

Dr. Allen Sinclair Will, 65, founder & director of Rutgers' Department of Journalism, onetime city editor of the Baltimore Sun; of cerebral em- bolism complicated by pneumonia; in Manhattan.

From Time Magazine Archive

In the future, more and more of them may em- ulate the experiments of Tanzania and Kenya.

From Time Magazine Archive

The forms en- and em- are of French origin.

From New Word-Analysis by William Swinton

Erring human mind-forces can work         only evil under whatever name or pretence they are em- 186:9 ployed; for Spirit and matter, good and evil, light and         darkness, cannot mingle.

From Science and Health, with Key to the Scriptures by Eddy, Mary Baker

She also starred with Olivier and Harry Hamlin in Cross’ adaptation of the Greek epic “Clash of the Titans” and a slew of film comedies before landing in the 1985 Merchant Ivory production of E.M.

From Los Angeles Times Sep. 27, 2024

Soucy focuses on the highs of Merchant and Ivory’s films, which began in the 1960s with films like “The Householder” and “Shakespeare-Wallah,” and developed over the next two decades before their 1985 adaptation of E.M.

From Salon Aug. 30, 2024

So begins the airy, delectable Merchant-Ivory-Jhabvala adaptation of E.M.

From Los Angeles Times Jun. 27, 2023

“Marabar,” Zimmerman’s original work, was named after a fictional cave referenced in E.M.

From New York Times Apr. 3, 2023

The E.M. variations resulting from stimulus range, as has been said, from ·4 volt to ·01 of that value, according to the metal employed.

From Response in the Living and Non-Living by Bose, Jagadis Chandra, Sir

With more experience, the rate could easily hit several thousand ems an hour, no matter the size of the type.

From Economist Mar. 30, 2018

Newsham said prompt treatment by fire and ems personnel at the scene helped to improve the boy’s prospects.

From Washington Post Jul. 10, 2017

That is if any of us are lucky or unlucky enough to become ems.

From The Wall Street Journal Jun. 10, 2016

Hanson doesn’t think that ems must necessarily live unhappy lives.

From The New Yorker Jun. 9, 2016

He courted pretty Emma Grey, One of earth's living gems— The sweetest Em, he used to say, Among a thousand "ems."

From Prairie Farmer, Vol. 56: No. 3, January 19, 1884. A Weekly Journal for the Farm, Orchard and Fireside by Various

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