| FF | degree of fineness of abrasive particles; fat-free; father factor; fecal frequency; fertility factor... |
|---|---|
| FFF | degree of fineness of abrasive particles; field-flow fractionation; flicker fusion frequency |
| FSP | familial spastic paraplegia; fibrin split products; fibrinogen split products; fine suspended partic... |
| mppcf | millions of particles per cubic foot of air |
| PLP | phospholipid; plasma leukapheresis; polypeptide; polystyrene latex particles; posterior lobe of pitu... |