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A unit in the field of typography where a unit of measurement is half the width of an em. By definition, it is equivalent to half of the height of the font (e.g. in 16 point type it is 8 points). As its name suggests, it is also traditionally the width of an uppercase letter “N”. The en dash (–) and en space ( ) are each one en wide. In English, the en dash is commonly used for inclusive ranges (e.g., “pages 12–17” or “August 7, 1988 – November 26, 2005”), and increasingly used to replace the long dash (“—”, also called an em dash or en rule). Also called ‘nut.’