| BUN/CR | blood urea nitrogen/creatine ratio |
|---|---|
| C/D | cigarettes per day; cup to disc ratio |
| CDR | calcium-dependent regulator; clinical dementia rating; complementary determining region; computerize... |
| CFR | case-fatality ratio; citrovorum-factor rescue; Code of Federal Regulations; complement-fixation reac... |
| CMR | cardiomodulorespirography; cerebral metabolic rate; chief medical resident; common medical record; c... |