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fluorine vs. fluoride

fluorine
[floor-een, -in, flawr-, flohr-] / ˈflʊər in, -ɪn, ˈflɔr-, ˈfloʊr- /

noun

Chemistry.

  1. the most reactive nonmetallic element, a pale-yellow, corrosive, toxic gas that occurs combined, especially in fluorite, cryolite, phosphate rock, and other minerals. F; 18.9984; 9.

fluoride
[floor-ahyd, flawr-, flohr-] / ˈflʊər aɪd, ˈflɔr-, ˈfloʊr- /

noun

Chemistry.

  1. a salt of hydrofluoric acid consisting of two elements, one of which is fluorine, as sodium fluoride, NaF.

  2. a compound containing fluorine, as methyl fluoride, CH 3 F.