| Acronym | Meaning |
| WRAS | Waste Reduction Advisory System |
| QLDA | Quasilocal Density Functional Approxn. |
| AIRS | Atmospheric Infrared Sounder |
| R-CNDO/1X | Relativistic Complete Neglect Of Differential Overlap (method) |
| COBE | Cosmic Background Explorer Satellite (NASA) |
| DE | Destruction Efficiency |
| APHA | American Public Health Association |
| ZPC | Zero-point (energy) Corrections |
| HIT | Heparin-induced Thrombocytopenia |
| NPP | Net Primary Productivity |