| Acronym | Meaning |
| AA | Aluminum Association |
| RHFS | Relativistic Hartree-Fock-Slater |
| JPO | Japanese Patent Office |
| COPW | Complete Orthogonalized Plane Wave |
| CIG | Commonwealth Industrial Gases Limited (Australia) |
| CLSA | Closed Loop Stripping Analysis |
| PWFB | Plane-wave First Born |
| NAIP | Neuronal Apoptosis Inhibitory Protein |
| IRGL | Interagency Regulatory Liaison Group |
| MCGR | Monte-Carlo Renormalization Group |