| fl | femtoliter; filtered load; flexion, flexible; fluorescent; flow; fluid; flutter; foot lambert |
|---|---|
| FSA | flexible spending account |
| FSI | foam stability index; Food Sanitation Institute; functional status index; function status index |
| FST | foam stability test |
| SF | Sabin-Feldman [test]; safety factor; salt-free; scarlet fever; screen film; seminal fluid; serosal f... |