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Pronunciation: (floor'ēn, -in, flôr'-, flōr'-), [key]
n. Chem.
the most reactive nonmetallic element, a pale-yellow, corrosive, toxic gas that occurs combined, esp. in fluorite, cryolite, phosphate rock, and other minerals. Symbol: F; at. wt.: 18.9984; at. no.: 9.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

fluorinatefluorine dating
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