fluctuation

/flʌktʃuːˈeɪʃən/

noun

  1. 1

    A motion like that of waves; a moving in this and that direction.

    the fluctuations of the sea
  2. 2

    A wavering; unsteadiness.

    fluctuations of opinion
  3. 3

    In medicine, a wave-like motion or undulation of a fluid in a natural or abnormal cavity (e.g. pus in an abscess), which is felt during palpation or percussion.

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