[ fluhk-choo-ey-shuh n ]
/ ˌflʌk tʃuˈeɪ ʃən /


continual change from one point or condition to another.
wavelike motion; undulation.
Genetics. a body variation due to environmental factors and not inherited.

Origin of fluctuation

1400–50; late Middle English < Latin fluctuātiōn- (stem of fluctuātiō) a fluctuation, wavering. See fluctuate, -ion

OTHER WORDS FROM fluctuation

non·fluc·tu·a·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for fluctuation

British Dictionary definitions for fluctuation

/ (ˌflʌktjʊˈeɪʃən) /


constant change; vacillation; instability
a variation in an animal or plant that is determined by environment rather than heredity
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012