| Acronym | Meaning |
| SOPPA | Second-order Polarization Propagator Approxn. |
| BMEP | Brake Mean Effective Pressure |
| SAS | Statistical Anal. System |
| MCSX | Multiconfiguration Single Excitation |
| SECWA | State Energy Commission Of Western Australia |
| ISAM | Ionically Self-assembled Monolayer |
| IAP | Ion Activity Products |
| OSAC | Organic Structures Accessed By Computer |
| RCO | Regenerative Catalytic Oxidizer |
| GRM | Geopotential Research Mission (USA Satellite) |