fluoridisation
- n the addition of a fluoride to the water supply (to prevent dental decay)
fluoridization
- n the addition of a fluoride to the water supply (to prevent dental decay)
fluorine
- n a nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite
fluorite
- n a soft mineral (calcium fluoride) that is fluorescent in ultraviolet light; chief source of fluorine
fluorocarbon
- n a halocarbon in which some hydrogen atoms have been replaced by fluorine; used in refrigerators and aerosols