| Acronym | Meaning |
| MBPT | Many-body Perturbation Theory |
| RCHF | Relaxed-core Hartree-Fock (approxn. In Calcns. On Mol. K-shell Excitation Spectra) |
| OESO | Ordnance Environmental Support Office (Navy) |
| TMBP | Tin Mill Black Plate |
| ACCR | Activated Carbon Catalytic Reduction |
| DOD | Department Of Defense |
| TFT | Thin Film Transistor |
| TAN | Total Acid Number |
| LEES | Local Excess-electron State (a Mol.-crystal Wave Function) |
| CIPAC | Collaborative International Pesticides Analytical Council |