| EF | ectopic focus; edema factor; ejection fraction; elastic fibril; electric field; elongation factor; e... |
|---|---|
| FF | degree of fineness of abrasive particles; fat-free; father factor; fecal frequency; fertility factor... |
| FFD | Fellow in the Faculty of Dentistry; focus-film distance |
| FOD | focus-to-object distance; free of disease |
| FSD | focus-skin distance |