| Acronym | Meaning |
| PSCA | Periodic Small-cluster Approach (a Many-body Technique In Electronic-structure Calcns.) |
| BLAST | Burst Locations With Arc Second Telescope |
| SCD | Sulfur Chemiluminescence Detector |
| NACLA | The National Cooperation For Laboratory Accreditation |
| VGO | Virgin Gas Oil |
| MCSTEP | Multiconfigurational Spin-tensor Electron Propagator |
| IGF | Irreducible Green Function |
| SSSA | Soil Science Society Of America |
| SEI | Secondary Electron Imaging |
| CFSRM | Coherent Forward Scattering Resonance Monochromator |