em

noun
\ ˈem How to pronounce em (audio) \

Definition of em

 (Entry 1 of 3)

1 : the letter m
2 : the width of a piece of type about as wide as it is tall used as a unit of measure of typeset matter

Definition of EM (Entry 2 of 3)

1 electromagnetic
2 electron microscope; electron microscopy
3 end matched
4 engineer of mines
5 enlisted man

em-

prefix

Definition of em- (Entry 3 of 3)

— see en-

First Known Use of em

Noun

13th century, in the meaning defined at sense 1

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Time Traveler for em

Time Traveler

The first known use of em was in the 13th century

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Cite this Entry

“Em.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/em. Accessed 28 Feb. 2021.

Style: MLA
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More Definitions for em

em-

Kids Definition of em-

— see en-

Medical Definition of EM

1 electromagnetic
2 electron microscope; electron microscopy
3 emergency medicine

Comments on em

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