| Abbreviation | Definition |
|---|---|
| CIDS | Canadian Implantable Defibrillator Study |
| CIE | Counter-current ImmunoElectrophoresis |
| CIL | Cambridge Isotope Laboratories |
| CIL | Cancer Innovation Laboratory |
| CIMC | Cornell Integrated Microscopy Center |
| CIML | Comparative Internal Medicine Laboratory |
| CIML | Cytokine Induced Memory Like |
| CIMS | Current Index of Medical Stores |
| CIMS/aka,DrugsDummies | Current index of medical stores |
| CIPL | Chemical Industrial Pharmaceutical Laboratories |
| CIPL | Chemical Industry of Pharmaceutical Laboratories |
| CIS | Central Inhibitory State |
| CIS | Clinical Information System |
| CIS | Cytokine-Inducing Substance |
| CISL | Chemical Imaging and Structures Laboratory |
| CISL | Communication and Information Sciences Laboratory |
| CISL | Computational and Information Systems Laboratory |
| CISL | Computational Information Systems Laboratory |
| CISR | Cell Imaging Shared Resource |
| CIWA | Clinical Institute Withdrawal Assessment |