| FE | fatty ester; fecal emesis; fetal erythroblastosis; fetal erythrocyte; fluid extract; fluorescent ery... |
|---|---|
| FEC | forced expiratory capacity; free erythrocyte coproporphyrin; freestanding emergency center; Friend e... |
| FEE | forced equilibrating expiration |
| FEF | forced expiratory flow |
| FEF50/FIF50 | ratio of expiratory flow to inspiratory flow at 50% of forced vital capacity |