| Acronym | Meaning |
| SCE | Self-consistent Energy (method In At. And Mol. Calcns. With An Einsteinian Relativistic Theory |
| FFSHC | Field Federal Safety And Health Councils |
| D.I. | Direct Injection [of Diesel Engines] |
| DBTT | Ductile-to-brittle Transition Temperature |
| RTPM | Real-time Polarization Modulation |
| NPS | Nonpoint Source |
| CGCG | Central Giant Cell Granuloma |
| AGWSE | Association Of Ground Water Scientists And Engineers |
| SGGA | Symmetric Group Graphical Approach (in CI Calcns.) |
| PHF-OCE | Perturbative Hartree-Fock One-center Expansion |