| Acronym | Meaning |
| PSD | Prevention Of Significant Deterioration |
| NMVOC | Nonmethane Volatile Organic Compound |
| IBAC | Immobilized Biomembrane Affinity Chromatography |
| ESIC | Electrostatic Interaction Chromatography |
| EDGAR | Electronic Data Gathering |
| TPEPICO | Threshold Photoelectron-photoion Coincidence |
| AMS | American Mathematical Society |
| ACRIM | Active Cavity Radiometer Irradiance Monitor |
| BRE | Bond Resonance Energy |
| WWPLOT | Whisker Wall Porous Layer Open Tubular Column |