fluoride

noun

fluo·​ride ˈflȯr-ˌīd  ˈflu̇r- 

often attributive

1

: a compound of fluorine

2

: the monovalent anion of fluorine

Examples of fluoride in a Sentence

Recent Examples on the Web

Minerals such as calcium, manganese, and fluoride support bone health, helping to prevent or manage diseases like arthritis and osteoporosis. — Embry Roberts, Martha Stewart, 2 July 2026

According to the Chinese Academy of Sciences, ITHome, and CarNewsChina, the research team developed a new composite electrolyte based on polyvinylidene fluoride (PVDF) and lithium oxychloride (Li₃OCl). — Kaif Shaikh, Interesting Engineering, 22 June 2026

These waters—rich in chloride, hydrogen sulfide, iron, fluoride, and iodide ions—promote blood circulation and muscle relaxation, boost metabolism, strengthen the immune system, and lower stress and inflammation. — Devorah Lev-Tov, Travel + Leisure, 13 June 2026

Again, an ammonium fluoride solution is one of the starting materials; the silicon dioxide simply precipitates out of this solution. — ArsTechnica, 28 May 2026

Word History

First Known Use

1826, in the meaning defined at sense 1

Phrases Containing fluoride

• hydrogen fluoride
• lithium fluoride
• sodium fluoride

Rhymes for fluoride

• abide
• allied
• applied
• aside
• astride
• azide
• backside
• bankside
• bastide
• bayside
• bedside
• belied

Kids Definition

fluoride

noun

flu·​o·​ride

ˈflu̇(-ə)r-ˌīd

: a compound of fluorine with another element or chemical group

Medical Definition

fluoride

noun

flu·​o·​ride ˈflu̇(-ə)r-ˌīd 

1

: a compound of fluorine with a more electropositive element or radical

2

: the monovalent anion of fluorine

fluoride adjective