plural of em

Indicating a fundamental unit in some kind of structure, chiefly linguistic structure.

A river in northwestern Germany.

A diminutive of the female given names Emma or Emily.

(biology, countable) Initialism of Effective Microorganism. / (energy) Initialism of Energy Management. / (countable) Abbreviation of electron microscope.

Abbreviation of electromagnetic.

(telecommunications) Initialism of Earth-Moon-Earth.

plural of EM

(US, slang) The Mexican Mafia.

(typography) The symbol (—) (used to demarcate a parenthetical thought or to indicate a break, or for emphasis)