noun (n)

• (of non-living objects) the state of being free of pathogenic organisms(noun.state)

  Synonym:
  antisepsis, sterileness, sterility
  

  source: wordnet30
• the process of inhibiting the growth and multiplication of microorganisms(noun.process)

  Synonym:
  antisepsis
  

  source: wordnet30
• State of being aseptic; the methods or processes of asepticizing.(noun)

  source: webster1913