| Acronym | Meaning |
| ACA | American Crystallographic Association |
| ACSV | Adsorptive Cathodic Stripping Voltammetry |
| UAPS | Utility Acid Precipitation Study |
| PDDO | Projection Of Diatomic Differential Overlap |
| GBA | Generalized Born Approxn. |
| PAIR | Patent Application Information Retrieval System |
| HLB | Hydrophilic-lipophilic Balance (of Surfactants) |
| RHO | Reduced Hamiltonian Orbital Method |
| RMP | Radon Measurement Proficiency |
| TRE | Toxicity Reduction Evaluation |