| Acronym | Meaning |
| MEMTB | Many-electron Mol. Tight-binding (for Electronic Structures) |
| IAGC | International Association Of Geochemistry And Cosmochemistry |
| ACBM | Asbestos Containing Building Material |
| LAP | Laboratory Accreditation Program |
| DQMC | Diffusion Quantum Monte Carlo (method In Atom And Mol. Calcns.) |
| GBS | Group B Streptococci |
| ERDA | US Energy Research And Development Administration |
| IC-ACPF | Internally Contracted (multireference) Averaged Coupled Pair Functional |
| PNA | Polynuclear Aromatic Compound(s) |
| MINDO/3L | Modified Intermediate Neglect Of Differential Overlap/3 For Limited Electrons |