Em Very Common

a quad with a square body

"since `em quad' is hard to distinguish from `en quad', printers sometimes called it a `mutton quad'"

a linear unit (1/6 inch) used in printing

The name of the Latin-script letter M .

Initialism of Effective Microorganism.

Abbreviation of electromagnetic.

Alternative form of 'em

A gender-neutral third-person singular object pronoun, the objective case of ey, equivalent to the singular them and coordinate with him and her.

a form of hesitant speech, or an expression of uncertainty; um; umm; erm

A diminutive of the female given names Emily and Emma.