| Acronym | Meaning |
| ARIC | Acid Rain Information Clearinghouse |
| MBS | Minimum Basis Set Wave Function |
| MR-MP2 | Multireference Moeller-Plesset For Two-configuration Wave Function |
| EGRIS | Emissive Gamma-ray Imaging And Spectroscopy |
| IGGE | Institute Of Geophysical And Geochemical Exploration |
| GDOS | Glow Discharge Optical Spectroscopy |
| SAGE II | Stratospheric Aerosol And Gas Expt. II |
| BNR | Biological Nutrient Removal |
| CCFO | Charge-charge Flux Overlap (model In Mol.-property Calcns.) |
| LSA | Linear Superposition Approximation |