| Abbreviation | Definition |
|---|---|
| CH | Color Hold |
| CH | Continuum Hypothesis |
| CHEP | Conference on High Energy Physics |
| CHP | Casing Head Pressure |
| CHP | Combined Heat and Power |
| CHTM | Center for High Technology Materials |
| CI | Constant Intensity |
| CI | Convective Instability |
| CICP | Communications in Computational Physics |
| CINP | Canadian Institute of Nuclear Physics |
| CIP | Contact Ion Pair |
| CIPG | Clinical Imaging Physics Group |
| CIPT | CNS Institute for Physics Teachers |
| CIRF | Circular Flow |
| CISR | Canadian Institute for Synchrotron Radiation |
| CJP | Canadian Journal of Physics |
| CKC | Closed Kinetic Chain |
| CKD | Cyclic Ketogentic Dieting |
| CKEM | Compact Kinetic Energy Missile |
| CLA | Condition Lever Angle |