noun (n)

• the act of arousing(noun.act)

  Example:
  The purpose of art is the arousal of emotions.
  

  Synonym:
  rousing
  

  source: wordnet30
• a state of heightened physiological activity(noun.state)

  source: wordnet30
• awakening from sleep(noun.cognition)

  source: wordnet30
• mutual sexual fondling prior to sexual intercourse(noun.act)

  Synonym:
  foreplay, stimulation
  

  source: wordnet30
• The act of arousing, or the state of being aroused.(noun)

  source: webster1913