fluoro-

a combining form with the meanings “fluorine,” “fluoride,” used in the formation of compound words: fluorocarbon.

a combining form with the meaning “fluorescence,” used in the formation of compound words: fluoroscopy.

Also, fluo-; especially before a vowel, fluor-.

Origin:
< Neo-Latin; see fluor, -o-

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Fluoro- is always a great word to know.

So is callithumpian. Does it mean:

a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.

a scrap or morsel of food left at a meal.

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Collins

World English Dictionary

fluoro- or (before a vowel) fluor-

—*combining form*
1.	indicating the presence of fluorine: fluorocarbon
2.	indicating fluorescence: fluoroscope

fluor- or (before a vowel) fluor-

—*combining form*

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage

Medical Dictionary

fluoro- or fluor-
pref.

Fluorine: fluorosis.
Fluorescence: fluoroscope.

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fluorometer fluorophosphate fluorophosphoric acid fluoroplastic fluoroscope fluoroscopy

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