| Abbreviation | Definition |
|---|---|
| ICPR | Information Center for Physics Research |
| ICPS | International Conference of Physics Students |
| ICR | Instantaneous Center of Rotation |
| ICR | Ion Cyclotron Resonance |
| ICS | Incredible Cross-Section |
| ICSSP | International Conference on Solid State Physics |
| ICTAP | International Conference on Theoretical and Applied Physics |
| ICTP | International Centre for Theoretical Physics |
| IDC | Insulation Displacement Contact |
| IDCL | Inverse Dynamics Control Law |
| IDCY | Idle Cycle |
| IDES | Integrated Distributed Energy Simulation |
| IDMP | International Day of Medical Physics |
| IDRG | Interaction Design Reading Group |
| IE | Independent Event |
| IEAP | Institute of Experimental and Applied Physics |
| IEL | Indirect Effects of Lightning |
| IET | Integrated Energy Technique |
| IETS | Inelastic Electron Tunneling Spectroscopy |
| IF | Impact Fracture |