| Acronym | Meaning |
| UBT | Urea Breath Test |
| DLA | Diffusion-Limited Aggregation |
| NWSIA | National Water Supply Improvement Association |
| DPASV | Differential Pulse Anodic Stripping Voltammetry |
| ISO | International Organization For Standardization |
| SNUR | Significant New Use Rule |
| ASW | Artificial Seawater |
| VEO | Valence Electron Only |
| VU-LCC | Valence-universal-linear Coupled Cluster |
| HBV | Hartree-Bogolyubov-Valatin (theory In Calcn. Of Wave Functions) |