| Acronym | Meaning |
| PO-TDSE | Periodic Orbit-time Dependent Schroedinger Equation |
| HPC | Heterotrophic Plate Count |
| VSP | Vertical Seismic Profile |
| DDRPA | Double Direct Random Phase Approximation |
| ECHIC | Evaporative Compact High-intensity Cooler |
| PWM | Pulse Width Modulation |
| HRM | Hydrochlorination Reaction Mixt. |
| LST | Light Scattering Tomography |
| NAEG | Nevada Applied Ecology Group (of US Department Of Energy) |
| CPD | Contact Potential Difference |