noun (n)

• the totality of surrounding conditions(noun.state)

  Example:
  He longed for the comfortable environment of his living room.
  

  source: wordnet30
• the area in which something exists or lives(noun.location)

  Synonym:
  environs, surround, surroundings
  

  source: wordnet30
• Act of environing; state of being environed.(noun)

  source: webster1913