| Acronym | Meaning |
| SPUMPN | Single-annihilation Procedure Unrestricted Moeller-Plesset Nth-order |
| AKD | Alkyl Ketene Dimer |
| SCCF | Self-consistent Continued Fraction |
| QTM | Quick-turnaround Method |
| RRHO | Rigid Rotor-harmonic Oscillator (approxn.) |
| WAP | Waste Analysis Plan |
| PMN | Premanufacture Notice |
| BACM | Best Available Control Measure |
| RPA | Random Phase Approximation |
| EPA | Environment Potential Approach (in Electronic-structure Calcn.) |