| Abbreviation | Definition |
|---|---|
| CMPL | Computational Multi Physics Laboratory |
| CMS | Compact Muon Solenoid |
| CMT | Chaos Magic Theory |
| CN | Canada's Neatest |
| CNDD | conspecific negative density dependence |
| CNO | Carbon Nitrogen And Oxygen |
| CNT(s) | carbon nanotube(s) |
| CNTFGL | Centrifugal |
| CNTP | Communications in Number Theory and Physics |
| COACH | Coded Aperture Correlation Holography |
| COBR | Continuous Oscillatory Baffle Reactor |
| CODP | Computational Optical and Discharge Physics |
| COG | Center Of Gravity |
| COG | Center of Gravity (physics ) |
| COIL | Chemical Oxygen Iodine Laser |
| COP | Coefficient Of Power |
| COP | Cooling Operating Procedures |
| COS | Change Of State |
| COSEM | Coincidence Ordered Subsets Expectation Maximization |
| COST | Curvature of Space Time |