| Abbreviation | Definition |
|---|---|
| COPD | Chronic Obstructive Pulmonary Disease |
| COPD | Copdchronic Obstructive Pulmonary Disease |
| COR | Control Of Record |
| CORDS | Coordination of Rare Diseases at Sanford |
| CORV | Coronavirus Vaccine |
| COV | Deltacoronavirus |
| COVAX | COVID-19 Vaccine |
| COVAX19 | COVID-19 Vaccine |
| COVID | Chinese Originated Viral Infectious Disease |
| COVID19FOAM | Coronavirus Disease 2019 Free Open Access Medicine |
| COWD | Chinese Organization for Wilson Disease |
| CP | Cardiopathy |
| CP | Cellular Pathology |
| CP | Cerebral Palsy |
| CP | Cyber-Phobia |
| CPAAC | Central Pennsylvania Asthma and Allergy Care |
| CPCD | Communities Preventing Chronic Diseases |
| CPDAI | Composite Psoriatic Disease Activity Index |
| CPDD | Calcium Pyrophosphate Deposition Disease |
| CPDR | Center for Prostate Disease Research |