Origin: Latin suffix -tion
Fluctuation has 4 different meanings across 1 category:
an instance of change; the rate or magnitude of change
"The sudden fluctuation in stock prices caused investors to panic and sell their shares immediately."
the quality of being unsteady and subject to changes
"he kept a record of price fluctuations"
A motion like that of waves; a moving in this and that direction.
"The boat rocked gently, creating a rhythmic fluctuation that made me feel as though I were riding on top of the water itself."