| Acronym | Meaning |
| HSL | Hazardous Substance List |
| RECLAIM | Regional Clean Air Incentives Market |
| CXAES | Continuous X-ray-induced Auger Electron Spectroscopy |
| LEIS | Low-Energy Ion Scattering Spectroscopy |
| LTMED | Low Temperature Multi-effect Distillation |
| RSK | Rajagopal-Singhal-Kimball (local-spin-d. Potential For Electronic Structure Calcns.) |
| PP-MRD-CI | Pseudopotential-multireference Double Excitation-CI |
| IAPPS | International Association For The Plant Protection Sciences |
| ASGP | Aerobic Suspended Growth Process |
| TIGER | Technique For Importing Greater Evolution Resolution In Multidimensional NMR |