| COS | cheiro-oral syndrome; chief of staff; Clinical Orthopaedic Society; clinically observed seizures |
|---|---|
| COSATI | Committee on Scientific and Technical Information |
| COSMIS | Computer System for Medical Information Systems |
| COSSMHO | [National] Coalition of Hispanic Health and Human Services Organizations |
| COSTAR | Computer-Stored Ambulatory Record |
| COSTEP | Commissioned Officer Student Training and Extern Program |
| COSY | correlated spectroscopy |