special character

Definitions

Computing

  • noun a character that is not a standard one in a certain font, e.g. a particular accent or a symbol

Electronics

  • A character that is not a letter, digit, or space, such as @, %, <, or +.

Publishing

  • noun a character which is not a normal one in a particular font, such as a particular accent or a symbol
http://www.dictionarycentral.com/definition/special-character.html