| Meaning | Combining Form |
| sugar | |
| urine, urinary tract, uric acid | |
| rod | |
| urethra | |
| seed, sperm, semen | |
| (sudden) pain, gout | |
| ureter | |
| renal pelvis | |
| outer layer (of an organ) | |
| penis | |
| | Meaning | Combining Form |
| animal, organism | |
| seed, semen | |
| groin | |
| (urinary) bladder, urinary bladder | |
| icy cold | |
| radiation | |
| scrotum | |
| abnormal sexual excitation or gratification | |
| testicle | |
|