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

The lack of full weather sealing and a fluorine coating are among its biggest weaknesses. —PCMAG, 2 Dec. 2024

Forever chemicals are made by bonding carbon isotopes, which have two different stable isotopes, to the element fluorine. —Alexandra Harrell, Sourcing Journal, 9 Aug. 2024

The weather protection extends to the front element, which is protected by a fluorine coat. —PCMAG, 12 Mar. 2025

Other features include snappy HLA linear focus motors, 4.5 stop optical stabilization at 300mm, and a weather-resistant construction with anti-smudge fluorine on the front element. —Jim Fisher, PCMAG, 24 Feb. 2025

Word History

Etymology

French, from New Latin fluor

First Known Use

1813, in the meaning defined above

Rhymes for fluorine

• agin
• alkene
• allene
• ameen
• amin
• amine
• arene
• athene
• baleen
• beeline
• benzene
• between

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