placeholder

  1. a person authorized to act for another
  2. a symbol in a logical or mathematical expression that can be replaced by the name of any member of specified set

placeholder

[n] - a symbol in a logical or mathematical expression that can be replaced by the name of any member of specified set
Found on http://www.webdictionary.co.uk/definition.php?query=placeholder

placeholder

noun a symbol in a logical or mathematical expression that can be replaced by the name of any member of specified set
Found on https://www.encyclo.co.uk/local/20974

Placeholder

[politics] In politics, a placeholder is an official appointed temporarily to a position, with the understanding that they will not seek office in their own right. The situation often occurs in cases where a United States Senator leaves office before the expiration of their term. In most states, governors have the power to appoint a replace...
Found on http://en.wikipedia.org/wiki/Placeholder_(politics)

Placeholder

Small graphic element used to replace a larger illustration or photograph until it has fully downloaded.
Found on http://www.encyclo.co.uk/local/20829
No exact match found