LEARNit Dictionary
fluctuation
noun
/ˌflʌktʃuˈeɪʃn/
UK
/ˌflʌktʃuˈeɪʃn/
US
1
one of several changes in size, amount, quality, etc. that happen frequently, especially from one extreme to another; the act of changing frequently like this
نوسان, افت و خیز, تغییرات مکرر