fluoride : Idioms & Phrases
Calcium fluoride
(Min.) , fluorite,CaF2 . SeeFluorite .
Webster 1913
hydrogen fluoride
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noun a colorless poisonous corrosive liquid made by the action of sulphuric acid on calcium fluoride; solutions in water are hydrofluoric acid
WordNet
sodium fluoride
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noun a colorless crystalline salt of sodium (NaF) used in fluoridation of water and to prevent tooth decay
WordNet
stannous fluoride
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noun a white powder that is used to fluoridate toothpaste