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.

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Question 1 of 10
earnest
full seriousness, as of intention or purpose.
a feeling of dread, anxiety, or anguish.
urgent character; imperativeness; insistence; importunateness.
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Also fluo-; especially before a vowel, fluor-

Origin of fluoro-

From New Latin; see origin at fluor, -o-

Words nearby fluoro-

fluorimeter, fluorinate, fluorine, fluorine dating, fluorite, fluoro-, fluorocarbon, fluorochemical, fluorochrome, fluorography, fluorometer
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for fluor- (1 of 2)

fluor-

combining form

a variant of fluoro- fluorene; fluorine

British Dictionary definitions for fluor- (2 of 2)

fluoro-

before a vowel fluor-

combining form

indicating the presence of fluorinefluorocarbon
indicating fluorescencefluoroscope
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

Medical definitions for fluor- (1 of 2)

fluor-

pref.

Variant offluoro-

Medical definitions for fluor- (2 of 2)

fluoro-

pref.

Fluorine:fluorosis.
Fluorescence:fluoroscope.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.