| Acronym | Meaning |
| SEL | Surface Emitting Laser |
| WSDA | Weighted Spin-density Approxn. |
| ACC | Approximate Coupled Cluster |
| NLS | Nonlinear Schroedinger Equation |
| MSS | Mobile Servicing Station [space Station] |
| EPV | Exclusion-principle Violating |
| CAEAL | Canadian Association For Environmental Analytical Laboratories |
| ORO | Office Of Regional Operations |
| LID | Laser Implant-deposition |
| LRMA | Laser Raman Microanalysis |