| Acronym | Meaning |
| SPA | Shielded-potential Approxn. (in Electronic Structure) |
| SRC | Solvent-refined Coal |
| UDWA | Unitarized Distorted-wave Approximation |
| VVHAP | Very Volatile Hazardous Air Pollutant |
| ECH | Electron Cyclotron Heating |
| SPHINCS | Sequential PHoton Interrogation And Neutron Counting Signatures |
| SCRIMP | Seemann Composites Resin Infusion Under Flexible Tooling [plastics Molding] |
| HLVB | Heitler-London Valence Bond |
| GEF | Guanine Nucleotide Exchange Factor |
| AWPCF | Air And Water Pollution Control Facilities |