Letters that make em quad
a, d, e, m, q, u are letters that make 'em quad'
1 possible definitions for 'em quad'
Under this definition, em quad is a noun and has the following properties:
em, mutton quad have the same meaning as 'em quad'
'em quad' can be a type of area unit, square measure.
"since `em quad' is hard to distinguish from `en quad', printers sometimes called it a `mutton quad'"