fluorination catalyst fluorination reaction fluorine fluorine and chlorine fluorine and iodine fluorine atom fluorine atoms fluorine content fluorine gas fluorine or chlorine fluorine-containing fluorite fluoro fluoroalkyl fluoroalkyl group fluorocarbon fluorocarbon polymer fluorocarbons fluorochemical fluorochemicals fluorochrome fluorochromes fluoroelastomer fluorogenic substrate fluorometer fluoromethyl fluorometric fluorophore fluorophores fluoroplastic fluoropolymer fluoropolymer coating fluoropolymers fluoroquinolone fluoroquinolones fluororesin fluororubber fluoroscope fluoroscopic fluoroscopy fluorosilicate fluorosis fluorouracil fluorspar fluoxetine flurries flurry flurry of activity flus flush flush draw flush gang flush her out flush him flush him out flush it flush it down the toilet flush it out flush me flush mount flush mounted flush mounting flush system flush tank flush the system flush the toilet flush them flush them out flush toilet flush toilets flush us flush valve flush water flush with cash flush with the surface flush with water flush you flush-mounted flushable flushed flushed away flushed down flushed down the toilet flushed him flushed it flushed out flushed them flushed with argon flushed with nitrogen flusher flushes flushing flushing it flushing line flushing meadows flushing out flushing solution flushing system flushing the toilet