noun (n)

• the act of expelling or projecting or ejecting(noun.act)

  Synonym:
  expulsion, forcing out, projection
  

  source: wordnet30
• the act of forcing out someone or something(noun.act)

  Example:
  The ejection of troublemakers by the police.
  

  Synonym:
  exclusion, expulsion, riddance
  

  source: wordnet30
• The act of ejecting or casting out; discharge; expulsion; evacuation.(noun)

  source: webster1913