noun (n)

• amount or degree or range to which something extends(noun.attribute)

  Synonym:
  extension, prolongation
  

  source: wordnet30
• the consequence of being lengthened in duration(noun.attribute)

  Synonym:
  continuation, prolongation, protraction
  

  source: wordnet30
• The state or quality of being lengthy; prolixity.(noun)

  source: webster1913