| FF | degree of fineness of abrasive particles; fat-free; father factor; fecal frequency; fertility factor... |
|---|---|
| FFE | fast field echo; fecal fat excretion |
| FFF | degree of fineness of abrasive particles; field-flow fractionation; flicker fusion frequency |
| FIGE | field inversion gel electrophoresis |
| FIM | field ion microscopy; functional independence measure |