| FF | degree of fineness of abrasive particles; fat-free; father factor; fecal frequency; fertility factor... |
|---|---|
| FC | fasciculus cuneatus; fast component [of a neuron]; febrile convulsions; feline conjunctivitis; ferri... |
| FTF | finger to finger |
| PLZF | promyelocytic leukemia zinc finger |
| ZF | zero frequency; zinc finger [protein]; zona fasciculata |