fluoro-

American  

especially before a vowel, fluo-;

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.

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fluoro- British  

combining form

1. indicating the presence of fluorine

   fluorocarbon

2. indicating fluorescence

   fluoroscope

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Etymology

Origin of fluoro-

From New Latin; fluor, -o-