(n.) 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.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). em. Retrieved September 21, 2026, from http://smartdefine.org/em/definitions/2002376 |
| Chicago | Webster's. 2011. "em" http://smartdefine.org/em/definitions/2002376 (accessed September 21, 2026). |
| Harvard | Webster's 2011, em, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/em/definitions/2002376>. |
| MLA | Webster's. "em" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/em/definitions/2002376> |