| Acronym | Meaning |
| TSH | Tensor Surface Harmonic (method In Bonding Of Metal Clusters) |
| OSRD | Office Of Scientific Research And Development |
| RAG | Risk Assessment Guideline |
| BIS | Bispectral Index |
| POCV | Pair Orthogonality Constrained Variation Method |
| VEEH | Variable Electronegativity Extended Hueckel Method |
| RHFS | Relativistic Hartree-Fock-Slater |
| ACAMS | Automatic Continuous Air Monitoring System |
| AJM | Abrasive Jet Machining |
| ASNT | American Society For Nondestructive Testing |