noun (n)

• a wave motion(noun.event)

  Example:
  The fluctuations of the sea.
  

  source: wordnet30
• an instance of change; the rate or magnitude of change(noun.event)

  Synonym:
  variation
  

  source: wordnet30
• the quality of being unsteady and subject to changes(noun.attribute)

  Example:
  He kept a record of price fluctuations.
  

  Synonym:
  wavering
  

  source: wordnet30
• A motion like that of waves; a moving in this and that direction; as, the fluctuations of the sea.(noun)

  source: webster1913