| CHRIS | Cancer Hazards Ranking and Information System |
|---|---|
| CHSS | cooperative health statistics system |
| CIDS | cellular immunity deficiency syndrome; circular intensity differential scattering; continuous insuli... |
| CIS | carcinoma in situ; catheter-induced spasm; central inhibitory state; Chemical Information Service; c... |
| COEPS | cortical originating extra-pyramidal system |