| COT | colony overlay test; content of thought; contralateral optic tectum; critical off-time |
|---|---|
| CR | calculation rate; calculus removed; calorie-restricted; cardiac rehabilitation; cardiac resuscitatio... |
| CSA | Canadian Standards Association; canavaninosuccinic acid; carbonyl salicylamide; cell surface antigen... |
| CSF | cancer family syndrome; cerebrospinal fluid; cold stability factor; colony-stimulating factor; coron... |
| CS-F | colony-stimulating factor |