| OS | left eye [Lat. oculus sinister]; occipitosacral; occupational safety; office surgery; Omenn syndrome... |
|---|---|
| TU | thiouracil; thyroid uptake; Todd unit; toxin unit; transmission unit; transurethral; tuberculin unit... |
| TUI | transurethral incision |
| TULIP | transurethral ultrasound-guided laser-induced prostatectomy |
| TUR | transurethral resection |