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WordReference Random House Unabridged Dictionary of American English © 2024fluc•tu•a•tion (fluk′cho̅o̅ ā′shən),USA pronunciation n. - continual change from one point or condition to another.
- wavelike motion;
undulation. - Geneticsa body variation due to environmental factors and not inherited.
- Latin fluctuātiōn- (stem of fluctuātiō) a fluctuation, wavering. See fluctuate, -ion
- late Middle English 1400–50
Collins Concise English Dictionary © HarperCollins Publishers:: ˌfluctuˈation /ˌflʌktjʊˈeɪʃən/ n - constant change; vacillation; instability
- undulation
- a variation in an animal or plant that is determined by environment rather than heredity
fluc•tu•ate /ˈflʌktʃuˌeɪt/USA pronunciation v. [no object], -at•ed, -at•ing. - to change continually; vary irregularly;
shift back and forth or up and down:Prices fluctuated wildly.
fluc•tu•a•tion /ˌflʌktʃuˈeɪʃən/USA pronunciation n. [countable]See -flu-. WordReference Random House Unabridged Dictionary of American English © 2024fluc•tu•ate (fluk′cho̅o̅ āt′),USA pronunciation v., -at•ed, -at•ing. v.i. - to change continually;
shift back and forth;
vary irregularly:The price of gold fluctuated wildly last month. - to move back and forth in waves.
v.t. - to cause to fluctuate.
- Latin fluctuātus undulated, past participle of fluctuāre to flow, equivalent. to fluctu(s) a flowing (derivative of fluere to flow) + -ātus -ate1
- 1625–35
- 1.See corresponding entry in Unabridged See waver.
- 2.See corresponding entry in Unabridged oscillate.
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