| TR | recovery time; rectal temperature; repetition time; residual tuberculin; terminal repeat; tetrazoliu... |
|---|---|
| TRR | total respiratory resistance |
| TSR | theophylline sustained release; thyroid to serum ratio; total systemic resistance |
| TSVR | total systemic vascular resistance |
| TTR | transthoracic resistance; transthyretin; triceps tendon reflex |