noun, plural ems.
- 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
Symbol, Physical Chemistry.
- electromagnetic.
- electromotive.
- electronic mail.
- electron microscope; electron microscopy.
- end matched.
- Engineer of Mines.
- enlisted man; enlisted men.
pronoun Informal.
- them: Put ’em down there.
- variant of en-1 before b, p, and sometimes m: embalm.
- variant of en-2 before b, m, p, ph: embolism, emphasis.
- Earl Marshal.
- Engineer of Mines.
noun printing
- Also called: mutton, mut the square of a body of any size of type, used as a unit of measurement
- Also called: pica em, pica a unit of measurement used in printing, equal to one sixth of an inch
prefix
pronoun
- an informal variant of them
representing Latin ex- assimilated to following -m- (see ex-).
from French assimilation of en- to following labial (see en- (1)). Also a prefix used to form verbs from adjectives and nouns.
Middle English, now taken as a colloquial abbreviation of them, but originally a form of hem, dative and accusative of the third person plural pronoun.
abbr.
- electron microscope
pref.
- Variant ofen-