| OCT | object classification test; optimal cutting temperature; oral contraceptive therapy; ornithine carba... |
|---|---|
| OTD | oculotrichodysplasia; oral temperature device; organ tolerance dose |
| PVT | paroxysmal ventricular tachycardia; portal vein thrombosis; pressure, volume, and temperature; priva... |
| RTV | room temperature vulcanization |
| STPD | a volume of gas at standard temperature and pressure that contains no water vapor |