| TF | free thyroxine; tactile fremitus; tail flick [reflex]; temperature factor; testicular feminization; ... |
|---|---|
| UF | film unsharpness; ultrafiltrate; ultrafiltration; ultrafine; ultrasonic frequency; universal feeder;... |
| UHF | ultrahigh frequency |
| Vf | visual frequency |
| Vf | variant frequency |