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em

[em]

Origin

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noun

the letter M, m.

Also called mut, mutton. Printing.

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

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

em pica.

adjective

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

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Em is always a great word to know.

So is zedonk. Does it mean:

a gadget; dingus; thingumbob.

the offspring of a zebra and a donkey.

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Origin:
1860–65

Dictionary.com Unabridged

electromagnetic.

electromotive.

electronic mail.

electron microscope; electron microscopy.

end matched.

EXPAND

Engineer of Mines.

enlisted man; enlisted men.

COLLAPSE

Symbol, Physical Chemistry.

emanation (def. 3).

pronoun Informal.

them: Put 'em down there.

Origin:
1350–1400; Middle English hem, Old English heom, dative and accusative plural of he¹

variant of en-¹ before b, p, and sometimes m: embalm.

Compare im-¹.

variant of en-² before b, m, p, ph: embolism, emphasis.

Earl Marshal.

Engineer of Mines.

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Link To em

Collins

World English Dictionary

em (ɛm)

—n
1.	mutton, Also called: mut the square of a body of any size of type, used as a unit of measurement
2.	pica em, Also called: pica a unit of measurement used in printing, equal to one sixth of an inch

[C19: from the name of the letter M]

'em (əm)

—*pron*
	an informal variant of them

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline

Word Origin & History

em-

from Fr. assimilation of en- to following labial; also from L. ex-, assimilated to following -m-. Also a prefix used to form verbs from adjectives and nouns.

EXPAND

'em

M.E., now taken as an abbreviation of them, but originally a form of hem, dative and accusative of the third person plural pronoun.

COLLAPSE

American Heritage

Medical Dictionary

EM abbr.
electron microscope

em- pref.
Variant of en-².

Slang Dictionary

em definition

[ɛm]
and emm

n.
an empty liquor bottle. (See also knock (so's) block off.) : Put your ems in the garbage, not on the floor.

Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw Hill.
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FOLDOC

Computing Dictionary