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

This has become a key argument for proponents of banning fluoride, but others have said the work lacks key context. —Deidre McPhillips, CNN Money, 24 July 2025

Over-the-counter vitamins and supplements don’t contain fluoride. —Erika Edwards, NBC news, 24 July 2025

Studies that suggest negative impacts of fluoride on children’s IQ and thyroid function, on the other hand, have mostly been conducted outside the U.S. and looked at higher ranges of fluoride than most U.S. children are exposed to. —Alana Semuels, Time, 23 July 2025

Supports Exercise Recovery The potassium, sodium, magnesium, and fluoride in tomatoes may help decrease muscle soreness and exercise fatigue after a workout. —Andrea Michelson, Verywell Health, 30 June 2025

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