Dictionary
fluor•ine
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.