noun (n)

• the act of increasing (something) in size or volume or quantity or scope(noun.act)

  Synonym:
  expansion
  Antonym:
  contraction
  

  source: wordnet30
• the state of being enlarged(noun.state)

  source: wordnet30
• a discussion that provides additional information(noun.communication)

  Synonym:
  elaboration, expansion
  

  source: wordnet30
• a photographic print that has been enlarged(noun.artifact)

  Synonym:
  blowup, magnification
  

  source: wordnet30
• The act of increasing in size or bulk, real or apparent; the state of being increased; augmentation; further extension; expansion.(noun)

  source: webster1913