| F | and R force and rhythm [of pulse] |
|---|---|
| FF | degree of fineness of abrasive particles; fat-free; father factor; fecal frequency; fertility factor... |
| F&R | force and rhythm [pulse] |
| FSR | Fellow of the Society of Radiographers; film screen radiography; force sensing resistor; fragmented ... |
| FVL | femoral vein ligation; flow volume loop; force, velocity, length |