| Acronym | Meaning |
| BWCCSD | Brillouin-Wigner Coupled-cluster (with) Single (and) Double (excitations) |
| SRS | Surface Reflectance Spectroscopy |
| MIAR | Mass Isotopomer Abundance Ratio |
| CCFO | Charge-charge Flux Overlap (model In Mol.-property Calcns.) |
| MPK | Methyl Propyl Ketone |
| SAR | Simulated Acidic Rain |
| UDMH | Unsymmetrical Dimethyl Hydrazine (Alar Metabolite) |
| JEIDA | Japan Electronic Industry Development Association |
| APHA | American Public Health Association |
| TDGI | Time-dependent Gage-invariant (quantum Calcn. Method) |