flʌktʃuːˈeɪʃən ˌvɛəɹɪˈeɪʃn̩ ˌvɛəɹiˈeɪʃn̩ the quality of being unsteady and subject to changes he kept a record of price fluctuations an instance of change; the rate or magnitude of change a wave motion the fluctuations of the sea