em dash

Etymology
Named for its width, which is equal to the width of the letter or, or approximately twice the width of an en dash.

Noun

 * 1)  The symbol (—) used to demarcate a parenthetical thought or to indicate a break, or for emphasis

Usage notes
These symbols are often identical in appearance and can be used as quotation dashes:


 * — (em dash)
 * ― (horizontal bar)

Translations

 * Chinese:
 * Mandarin:
 * Czech: dlouhá pomlčka
 * Dutch: heel kastlijntje
 * Finnish:, pitkä ajatusviiva
 * French:
 * German:
 * Greek: διπλή παύλα
 * Hungarian:
 * Icelandic: þankastrik
 * Irish: eim-dais
 * Italian: lineetta emme
 * Macedonian: долга црта
 * Persian: تمام‌خط
 * Polish:
 * Portuguese:
 * Russian:
 * Spanish:
 * Swedish: långt tankstreck, helfyrkantsminus