| TF | free thyroxine; tactile fremitus; tail flick [reflex]; temperature factor; testicular feminization; ... |
|---|---|
| FRS | Fellow of the Royal Society; ferredoxin-reducing substance; first rank symptom; furosemide |
| RS | radioscaphoid; random sample; rating schedule; Raynaud syndrome; recipient's serum; rectal sinus; re... |
| TR | recovery time; rectal temperature; repetition time; residual tuberculin; terminal repeat; tetrazoliu... |
| TRH | tension-reducing hypothesis; thyrotropin-releasing hormone |