| Acronym | Meaning |
| PI | Polydispersity Index |
| REELM | Reflected Electron Energy Loss Microscopy |
| CDMA | Code Division Multiple Access |
| SINDO/F | SINDO Free Of Empirical Parameters |
| RCI | Relativistic Configuration Interaction |
| NREP | National Registry Of Environmental Professionals |
| LCIF | Linear Combination Of Interacting Forces |
| SMM | Solar Maximum Mission |
| JPDR | Japan Power Demonstration Reactor |
| CARA | Chemical Assessments And Related Activities |