noun (n)

• the pathological state resulting from the invasion of the body by pathogenic microorganisms(noun.state)

  source: wordnet30
• (phonetics) the alteration of a speech sound under the influence of a neighboring sound(noun.process)

  source: wordnet30
• (medicine) the invasion of the body by pathogenic microorganisms and their multiplication which can lead to tissue damage and disease(noun.process)

  source: wordnet30
• an incident in which an infectious disease is transmitted(noun.event)

  Synonym:
  contagion, transmission
  

  source: wordnet30
• the communication of an attitude or emotional state among a number of people(noun.communication)

  Example:
  The infection of his enthusiasm for poetry.
  

  Synonym:
  contagion
  

  source: wordnet30
• moral corruption or contamination(noun.attribute)

  Example:
  Ambitious men are led astray by an infection that is almost unavoidable.
  

  source: wordnet30
• (international law) illegality that taints or contaminates a ship or cargo rendering it liable to seizure(noun.attribute)

  source: wordnet30
• The act or process of infecting.(noun)

  source: webster1913