| Subject | English | Thesaurus |
| abbr., qual.cont. | characteristic function | ch.f. |
| abbr., qual.cont. | characteristic function | c.f. |
| abbr., progr. | combinational logic function | combinational logical function (ssn) |
| IT, abbr. | Connection Related Function Virtual Path | CRFVP (UPC, UNI) |
| IT, abbr. | Connection Related Function Virtual Path | CRF(VP) (UPC, UNI) |
| abbr., oil | convolution function | c(t) |
| abbr., scottish | CounterMine, Variable Function Insert | CM-VFI |
| abbr., progr. | function block logic | logic of function block (ssn) |
| abbr., tech. | Life Approximation Function | LAF (bonly) |
| el., abbr. | Logic Function | LF |
| abbr., progr. | logic of function block | function block logic (ssn) |
| el., abbr. | Multi Function Actuator | MFA |
| abbr., scottish | Multi-Function Tanker Transport | MFTT |
| progr. | threshold function | Heaviside function (ssn) |
| mil., abbr. | Variable Key Function | VKF |
| phys., abbr. | Wigner Function Transport Equation | WFTE |
| IT, abbr. | Work Station Function | WSF (IN) |
| abbr., comp., net. | Work Station Function | WSF |