Fluctuation

Definitions

1. A motion like that of waves; a moving in this and that direction; an irregular rising and falling.
   countable, uncountable
2. A wavering; unsteadiness.
   countable, uncountable
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.
   countable, uncountable

Equivalents

Examples

“the fluctuations of the sea”

“The scientific instruments of the day recorded rapid fluctuations in the Earth's magnetic field, as powerful electrical currents flowed through the upper atmosphere.”

“fluctuations of opinion”

“fluctuations of prices”

CEFR level