flu·​or | \ ˈflü-ˌȯr How to pronounce fluor (audio) , ˈflü-ər \

Definition of fluor

 (Entry 1 of 2)

variants: or fluoro-

Definition of fluor- (Entry 2 of 2)

1 : fluorine fluoride
2 or less commonly fluori- : fluorescence fluoroscope fluorimeter

Examples of fluor in a Sentence

Recent Examples on the Web: Noun Martinez-Valle has restructured those operations into five smaller global business units—irrigation systems, pipes, fluor (including propellants used for inhalers), cable conduits, and PVC making—each with their own presidents. John Engen, Quartz at Work, "How a global chemical company gave itself a corporate purpose makeover," 16 Dec. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fluor.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of fluor


1661, in the meaning defined above

History and Etymology for fluor


New Latin, mineral belonging to a group used as fluxes and including fluorite, from Latin, flow, from fluere — more at fluid

Combining form


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Time Traveler for fluor

Time Traveler

The first known use of fluor was in 1661

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Statistics for fluor

Cite this Entry

“Fluor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fluor. Accessed 4 Aug. 2020.

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More Definitions for fluor


flu·​or | \ ˈflü-ˌȯ(ə)r How to pronounce fluor (audio) , ˈflü-ər How to pronounce fluor (audio) \

Medical Definition of fluor

: a bodily discharge make a diagnosis of pathological fluorArchives of Therapeutics

More from Merriam-Webster on fluor

Britannica.com: Encyclopedia article about fluor

Comments on fluor

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