| Abbreviation | Definition |
|---|---|
| CPS | Centimeters Per Second |
| CPS | Central Plasma Sheet |
| CPS | Constant Pressure System |
| CPS | Cycles Per Second |
| CPWP | Computational Physics With Python |
| CQM | Constituent Quark Model |
| CQW | Coupled Quantum Wells |
| CR | Consistency Ratio |
| CR | CRystalline solid |
| CR | Curvature Radiation |
| CREAM | Combat Readiness Electromagnetic Analysis Measurement |
| CREB | CERN Reports Editorial Board |
| CRESST | cryogenic rare event search with superconducting thermometers |
| CRISP | Cluster of Research Infrastructures for Synergies in Physics |
| CRNP | Cooperative Research Network Physics |
| CRR | Center for Radiological Research |
| CRS | Comprehensive, Representative, or Selective |
| CRT | Conformal Radiation Therapy |
| CS | Chern-Simons |
| CSCO | Complete Set of Commuting Operators |