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fluctuate

[fluhk-choo-eyt] /ˈflʌk tʃuˌeɪt/
verb (used without object), fluctuated, fluctuating.
1.
to change continually; shift back and forth; vary irregularly:
The price of gold fluctuated wildly last month.
2.
to move back and forth in waves.
verb (used with object), fluctuated, fluctuating.
3.
to cause to fluctuate.
Origin of fluctuate
1625-1635
1625-35; < Latin fluctuātus undulated, past participle of fluctuāre to flow, equivalent to fluctu(s) a flowing (derivative of fluere to flow) + -ātus -ate1
Related forms
nonfluctuating, adjective
unfluctuating, adjective
Synonyms
1. See waver1 . 2. oscillate.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for fluctuating

fluctuate

/ˈflʌktjʊˌeɪt/
verb
1.
to change or cause to change position constantly; be or make unstable; waver or vary
2.
(intransitive) to rise and fall like a wave; undulate
Word Origin
C17: from Latin fluctuāre, from fluctus a wave, from fluere to flow
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
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Word Origin and History for fluctuating

fluctuate

v.

1630s, from Latin fluctuatus, past participle of fluctuare "to undulate" (see fluctuation). Related: Fluctuated; fluctuates; fluctuating.

Online Etymology Dictionary, © 2010 Douglas Harper
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fluctuating in Medicine

fluctuate fluc·tu·ate (flŭk'chōō-āt')
v. fluc·tu·at·ed, fluc·tu·at·ing, fluc·tu·ates

  1. To vary irregularly.

  2. To rise and fall in waves; undulate.


fluc'tu·a'tion n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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