| FFD | Fellow in the Faculty of Dentistry; focus-film distance |
|---|---|
| FFDCA | Federal Food, Drug, and Cosmetic Act |
| FFDD | focal facial dermal dysplasia |
| FFDSRCS | Fellow of the Faculty of Dental Surgery of the Royal College of Surgeons |
| FFDW | fat-free dry weight |
| FFE | fast field echo; fecal fat excretion |
| FFF | degree of fineness of abrasive particles; field-flow fractionation; flicker fusion frequency |
| FFG | free fat graft |
| FFHC | federally funded health center |
| FFHom | Fellow of the Faculty of Homeopathy |