fluoride

noun, often attributive fluo·ride \ ˈflȯr-ˌīd , ˈflu̇r- \
|Updated on: 10 Jul 2018

Definition of fluoride

1 : a compound of fluorine
2 : the monovalent anion of fluorine

Recent Examples of fluoride from the Web

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

First Known Use of fluoride

1826

in the meaning defined at sense 1

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FLUORIDE Defined for English Language Learners

fluoride

Definition of fluoride for English Language Learners

  • : a chemical that is sometimes added to drinking water and toothpaste to help keep teeth healthy


FLUORIDE Defined for Kids

fluoride

noun fluo·ride \ ˈflȯr-ˌīd , ˈflu̇r- \

Definition of fluoride for Students

: a compound of fluorine
  • Many toothpastes contain fluoride to help prevent tooth decay.

Medical Dictionary

fluoride

noun flu·o·ride \ ˈflu̇(-ə)r-ˌīd \

medical Definition of fluoride

1 : a compound of fluorine with a more electropositive element or radical
2 : the monovalent anion of fluorine

fluoride

adjective


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