American English

Definition of fluoride noun from the Oxford Advanced American Dictionary

 

fluoride

 noun
noun
NAmE//ˈflɔraɪd//
 
, NAmE//ˈflʊraɪd//
 
[uncountable]
 
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a chemical containing fluorine that protects teeth from decay and is often added to toothpaste and sometimes to drinking water
See the Oxford Advanced Learner's Dictionary entry: fluoride