| ECG | Electro-Cardio-Graphy(-Gram); ½ÉÀüµµ = EKG 1. Conducting System Structu... |
|---|---|
| EFFU | epithelial focus-forming unit |
| FFD | Fellow in the Faculty of Dentistry; focus-film distance |
| FFIT | fluorescent focus inhibition test |
| FOD | focus-to-object distance; free of disease |