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intr.v. fluc·tu·at·ed, fluc·tu·at·ing, fluc·tu·ates
To vary irregularly, especially in amount: School enrollment has fluctuated from year to year.

[Latin flūctuāre, flūctuāt-, from flūctus, a flowing, from past participle of fluere, to flow; see bhleu- in Indo-European roots.]

fluc′tu·a′tion n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.fluctuating - having unpredictable ups and downs; "fluctuating prices"
unsteady - subject to change or variation; "her unsteady walk"; "his hand was unsteady as he poured the wine"; "an unsteady voice"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


[ˈflʌktjʊˌeɪtɪŋ] adjoscillante
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in periodicals archive ?
With the growth of tomatoes, the temperature and humidity of soil and air in the greenhouse rises fluctuatingly. Due to the instability of the spring climate, the temperature fluctuates greatly during the seedling period and the humidity is low.
After the study on the particle size and the vertical variation pattern of the heavymetals of the core ZXY01, ZXY02, it could be found that (1) the tendency of heavy metal Zn, Pb, and Cu in ZXY01 was basically the same; on the whole it decreased fluctuatingly from the surface to the downward, at -15 cm, -30 cm, and -55 cm, it formed the peak value, while at -25 cm, -55 cm it formed the valley value; (Pb was noticeably increasing only bellow -60 cm, different from the other two metals); the peak and valley values of them were in good coordination.
Similar to the deviation analysis of permeability, the damage values also fluctuatingly tend to stability according to the deviation of the damage tensor in different sizes and directions shown in Figure 15.