| Acronym | Meaning |
| TIWSLS | Time-independent Wave Packet Schroedinger (and) Lippmann-Schwinger (equation) |
| SPAD | Single Photon Avalanche Diode |
| PBX | Plastic Bonded Explosive |
| DPP | Differential-pulse Polarography |
| CAFE | Corporate Average Fuel Economy |
| BHN | Brinell Hardness Number |
| GWPC | Ground Water Protection Council |
| EGFP | Enhanced Green Fluorescent Protein |
| TSP | Total Suspended Particles |
| NAA | Nonattainment Area |