| Acronym | Meaning |
| CEPA-SD | Coupled-electron-pair Approxn. (with) Single (and) Double Excitations |
| HETE | Hydroxyeicosatetraenoic Acid |
| PDU | Process Development Unit |
| SIMOX | Separation By Implanted Oxygen |
| NTS | Nevada Test Site |
| MCR | Multivariate Curve Resolution |
| HOAT | 1-hydroxy-7-azabenzotriazole (peptide Coupling Agent) |
| CVOC | Chlorinated Volatile Organic Compound |
| DRS | Dissolved Reactive Silicate |
| GPCP | Global Precipitation Chemistry Program |