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fluorine
noun
fluo·rine
ˈflu̇r-ˌēn
ˈflȯr-
: a nonmetallic gaseous chemical element of the halogen group with atomic number 9 that readily forms compounds with almost all other elements including some noble gases see Chemical Elements Table
Examples of fluorine in a Sentence
Recent Examples on the Web
These metabolites can have their own environmental issues, but the analysis found that after 194 days the bacteria had removed the fluorine from three PFOS metabolites.
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Michael Irving, New Atlas, 9 Feb. 2025
Many groups are devising novel PEM membranes without fluorine, as well as electrodes that require less iridium.
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science.org, 23 Jan. 2025
Of all the wristbands sampled, the researchers observed that those that cost more than $30 contained more fluorine than those priced less than $15.
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Sharon Udasin, The Hill, 18 Dec. 2024
The scientists ended up screening 22 wristbands from a range of brands and price points, looking for both fluorine — which indicates the possible presence of PFAS — and 20 individual types of PFAS.
—
Sharon Udasin, The Hill, 18 Dec. 2024
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Word History
Etymology
French, from New Latin fluor
First Known Use
1813, in the meaning defined above
Dictionary Entries Near fluorine
Cite this Entry
“Fluorine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fluorine. Accessed 21 Feb. 2025.
Kids Definition
fluorine
noun
flu·o·rine
ˈflu̇(-ə)r-ˌēn,
-ən
: a nonmetallic element that is normally found alone as a pale yellowish flammable irritating poisonous gas having two atoms per molecule see element
Medical Definition
fluorine
noun
fluo·rine
ˈflu̇(-ə)r-ˌēn
-ən
: a nonmetallic monovalent halogen element that is normally a pale yellowish flammable irritating toxic gas
—symbol F
see Chemical Elements Table
More from Merriam-Webster on fluorine
Nglish: Translation of fluorine for Spanish Speakers
Britannica.com: Encyclopedia article about fluorine
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