[fluhk-choo-eyt] /ˈflʌk tʃuˌeɪt/
verb (used without object), fluctuated, fluctuating.
to change continually; shift back and forth; vary irregularly:
The price of gold fluctuated wildly last month.
to move back and forth in waves.
verb (used with object), fluctuated, fluctuating.
to cause to fluctuate.
to change or cause to change position constantly; be or make unstable; waver or vary
(intransitive) to rise and fall like a wave; undulate
1630s, from Latin fluctuatus, past participle of fluctuare “to undulate” (see fluctuation). Related: Fluctuated; fluctuates; fluctuating.
fluctuate fluc·tu·ate (flŭk’chōō-āt’)
v. fluc·tu·at·ed, fluc·tu·at·ing, fluc·tu·ates
noun 1. a method of determining the relative age of fossil bones found in the same excavation by comparing their fluorine content.
[floo r-ahyt, flawr-, flohr-] /ˈflʊər aɪt, ˈflɔr-, ˈfloʊr-/ noun 1. a common mineral, calcium fluoride, CaF 2 , occurring in green, blue, purple, yellow, or colorless crystals, usually in cubes: the principal source of fluorine, used also as a flux in metallurgy and for ornament. /ˈflʊəraɪt/ noun 1. (US & Canadian) a white or colourless […]
1. a combining form with the meanings “fluorine,” “fluoride,” used in the formation of compound words: fluorocarbon. 2. a combining form with the meaning “fluorescence,” used in the formation of compound words: fluoroscopy. combining form 1. indicating the presence of fluorine: fluorocarbon 2. indicating fluorescence: fluoroscope fluoro- or fluor- pref.
[floo r-oh-kahr-buh n, flawr-, flohr-] /ˌflʊər oʊˌkɑr bən, ˈflɔr-, ˈfloʊr-/ noun, Chemistry. 1. any of a class of compounds produced by substituting fluorine for hydrogen in a hydrocarbon, and characterized by great chemical stability: used chiefly as a lubricant, refrigerant, fire extinguishing agent, and in industrial and other applications in which chemical, electrical, flame, and […]