fluoroscope
- n an X-ray machine that combines an X-ray source and a fluorescent screen to enable direct observation
fluorosis
- n a pathological condition resulting from an excessive intake of fluorine (usually from drinking water)
fluorspar
- n a soft mineral (calcium fluoride) that is fluorescent in ultraviolet light; chief source of fluorine
fluosilicic acid
- n an unstable poisonous corrosive acid known primarily in the form of its salts