Definition that contains fluor
- f 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
- ballast an electrical device for starting and regulating fluorescent and discharge lamps
- fluorescent a lighting fixture that uses a fluorescent lamp
- fluoride a salt of hydrofluoric acid
- freon any one or more chlorofluorocarbons (or related compounds) that are used as an aerosol propellant, organic solvent, or refrigerant
- fluorite a soft mineral (calcium fluoride) that is fluorescent in ultraviolet light; chief source of fluorine
- halogen any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions
- fluorine 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
- scintillate physics: fluoresce momentarily when struck by a charged particle or high-energy photon
- fluorescein a yellow dye that is visible even when highly diluted; used as an absorption indicator when silver nitrate solution is added to sodium chloride in order to precipitate silver chloride (turns pink when no chloride ions are left in solution and negative fluorescein ions are then absorbed)