| Acronym | Meaning |
| EI | Electron Impact |
| PWO | Plane Wave Orbital |
| CAUGA | Clifford Algebra Unitary Group Approach |
| ICACGP | International Commission On Atmospheric Chemistry And Global Pollution |
| OASCR | Office Of Advanced Scientific Computing Research |
| RAST | Radioallergosorbent Test (immunoassay) |
| SPM | Suspended Particulate Matter |
| SOA | Semiconductor Optical Amplifier |
| HMA | Hybrid Microelectronics Assembly |
| SRASE | Symmetry Restricted Annihilation Of Single Excitations |