| Acronym | Meaning |
| HART | Highway Addressable Remote Transducer [Rosemount |
| ELM | Emulsion Liquid Membranes |
| IOA | International Ozone Association |
| NAPAP | National Acid Precipitation Assessment Program |
| NPCVD | Normal Pressure Chemical Vapor Deposition |
| PCGVB | Pairwise Correlated Generalized Valence Bond Method |
| FCAW | Flux-cored Arc Welding |
| SIFT | Selected Ion Flow Tube |
| LIT | Linear Ion Trap |
| TACB | Texas Air Control Board |