em

1 of 3

noun

ˈem

: the letter m

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

2 of 3

electromagnetic

electron microscope; electron microscopy

end matched

engineer of mines

enlisted man

em-

3 of 3

see en-

First Known Use

Noun

13th century, in the meaning defined at sense 1

Time Traveler

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

See more words from the same century

Style

“Em.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/em. Accessed 28 Nov. 2024.

Copy Citation

em-

see en-

abbreviation

electromagnetic

electron microscope; electron microscopy

emergency medicine

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