| COV | covariance; cross-over value |
|---|---|
| NPV | negative predictive value; pressure value; negative pressure ventilation; net present value; nuclear... |
| CEA | Carcino-Embryonic Antigen [HP 1825-6] ; Oncofetal Antigens ; Glycopro... |
| CO | carbon monoxide; cardiac output; castor oil; casualty officer; centric occlusion; cervical orthosis;... |
| OD | 1) Doctor of Optometry 2) Oculus Dexter; Right Eye; 우측눈 3)... |