Energy equals Mass

An em is a unit of measurement in the field of typography, equal to the pt size of the current font. This unit is not defined in terms of any specific typeface, and thus is the same for all fonts at a given point size.Robert Bringhurst. The Elements of Typographic Style Vancouver, B.C., Canada: Hartley & Marks, Publishers, 1992. 25-26.

Emerg Mkts

An obsolete or colloquial contraction of the old form hem, them.

Expectation-Maximization

Effective Microorganism

The portion of a line formerly occupied by the letter m, then a square type, used as a unit by which to measure the amount of printed matter on a page; the square of the body of a type.

the square of a body of any size of type

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

Electronic Monitoring

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