| Acronym | Meaning |
| GPO | Government Printing Office |
| TSQMS | Triple-stage Quadrupole Mass Spectrometry |
| TED | Thermal Electron Detectors |
| IAP | Intermittent Aeration Process (for Waste Treatment) |
| BAO | Best Atomic Orbital Basis |
| INTEGRAL | International Gamma-Ray Astrophysics Laboratory |
| AUSM | Advanced Utility Simulation Model |
| DI | Direct Injection (engine; Diesel) |
| SPORE | Solid-Phase Organic Reactions |
| WPCR | Water Pollution Control Research (US EPA) |