| Subject | English | Thesaurus |
| abbr., auto. | A/F SE | air flow sensor |
| abbr., mil. | F-CAP | Force-Closure Analysis Program |
| Nasdaq, abbr. | F N B Financial Services Corporation | FNBF |
| abbr., nucl.pow. | F-P phase transition | ferromagnetic-paramagnetic transition (MichaelBurov) |
| abbr., nucl.pow. | F-P phase transition | ferromagnetic-paramagnetic phase transition (MichaelBurov) |
| abbr., nucl.pow. | F-P transition | ferromagnetic-paramagnetic transition (MichaelBurov) |
| abbr., nucl.pow. | F-P transition | ferromagnetic-paramagnetic phase transition (MichaelBurov) |
| abbr., telecom. | i.f. | IF |
| abbr. | O.F.M.Cap. | Ordo Minorum Cappucinorum (Capuchins) |
| abbr., microel. | Seebeck e.m.f. | thermoelectromotive force |
| abbr., microel. | V-F conversion | voltage-to-frequency conversion |
