| FSI | foam stability index; Food Sanitation Institute; functional status index; function status index |
|---|---|
| FT | Fallot tetralogy; false transmitter; family therapy; fast twitch; fatigue trial; fibrous tissue; fin... |
| funct | function, functional |
| FXN | function |
| KF | Kenner-fecal medium; kidney function; Klippel-Feil [syndrome] |