| Abbreviation | Definition |
|---|---|
| FDS | Feminine Deodorant Spray |
| FEAR | False Evidence About Reality |
| FEB | Fever |
| FEB | Flesh Eating Bacteria |
| FEC | Forced Expiratory Capacity |
| FED | Fish Eye Disease |
| FEF | Forced Expiratory Flow |
| FEF | Frontal Eye Field |
| FEFUM | Ferrous Fumarate |
| FEKG | Fetal Electrocardiogram |
| FEN | Fluids, Electrolytes, and Nutrition |
| FEPSP | Field Excitatory Post Synaptic Potential |
| FER | Flexion, extension, rotation |
| FERPYRO | Ferric Pyrophosphate |
| FES | Functional Electrical Stimulation |
| FESS | Fat Expanded Style sheet |
| FESS | Functional Endoscopic Sinus Surgery |
| FESULF | Ferrous Sulfate |
| FEV | Fever |
| FEV | Forced Expiratory Volume |