What does en mean?
"En" is the name of the fourteenth letter of the English alphabet, the familiar "n." Its most active life, however, is in printing and typography, where "en" names a unit of horizontal measurement equal to half an em — conventionally about the width of a lowercase "n" in whatever typeface is being used. This unit gives rise to a family of technical terms: the en dash, used for ranges such as dates and page numbers; the en quad, a piece of blank type; and the en space, a gap of that width. Because the en is proportional to the current type size, it scales naturally within any design. Outside these specialist contexts the word rarely appears on its own, but anyone who works with text — editors, designers, typesetters — relies on it constantly, usually without pausing to think that a single lowercase letter became a unit of measurement.
The fourteenth letter of the English alphabet.
"Write your answer starting with the letter en."
Usually encountered simply as the spoken name of the letter N.
A typographic unit of measurement equal to half an em.
"Replace the hyphen with an en dash in that date range."
Standard plural is "ens"; some printers informally write "en's," but "ens" is preferred.
"Add a couple of ens of space between those columns."
In printing, every letter has its own ruler — and the humble lowercase "n" became the yardstick: half of it is an en, the whole thing an em.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of en
As the name of the letter, "en" descends from the Semitic ancestor of N through Greek "nu" and Latin "en" (the Latin name of the letter), entering English via Old French. The typographic sense developed among printers as a natural extension of letter-names into units of measure, paralleling the older term "em," named after the letter M. The two terms have been paired in English printing vocabulary since at least the seventeenth century.
How en is actually used
Beyond naming the letter itself, "en" lives almost entirely in typographic jargon — printers and typesetters use it in compounds such as "en dash" and "en quad." In speech it is indistinguishable from simply saying the letter N.
Easily confused with en
An em is twice the width of an en: an en equals half an em, so an en dash is shorter than an em dash.