| fú | fluorine F, halogen with atomic number 9 |
| 氟 | fluorine (chemistry) |
| 氟中毒 | [Medicine] fluorosis |
| 氟代 | fluoro |
| 氟利昂 | freon (chemistry) |
| 氟化 | fluoridation fluorination |
| 氟化氢 | hydrofluoric acid |
| 氟化物 | fluoride |
| 氟化银 | [Chemistry] tachiol; silver fluoride |
| 氟塑料 | fluoroplastic; fluorplastic; fluoroplastics |
| 氟尿嘧啶 | fluorouracil |
| 氟氯碳氢化合物 | Hydrochlorofluorocarbons (HCFCs）(a group of man-made compounds containing hydrogen, chlorine, fluorine and carbon) |
| 氟石 | fluorite CaF2 fluorspar fluor |
| 氟硅化物 | [Chemistry] fluosilicate |
| 氟硅酸 | fluorosilicic acid H2SiF6 fluorosilicate |
| 氟硝安定 | flunitrazepan |
| 氟里昂 | [Chemistry] Freon |
| 氟量计 | fluorometer; fluorimetry; fluorometry |