Dictionary
em
noun \ˈem\
Definition of EM
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
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First Known Use of EM
13th century
EM
abbreviation
Definition of EM
1
electromagnetic
2
electron microscope; electron microscopy
3
end matched
4
engineer of mines
5
enlisted man
Seen & Heard
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