| Acronym | Meaning |
| AS | Activated Sludge |
| ENFET | Enzyme Field-effect Transistor |
| IAP | Intracisternal A-particle |
| OHCE | One-and-a-half-centered Expansion (method For Calcns. On Charge Transfer In Ion-atom Scattering) |
| PCB | Polychlorinated Biphenyl |
| PACE | Plasma Assisted Chemical Etching |
| EROS | Earth Resources Observation Satellite |
| BARF | Best Available Retrofit Facility |
| MIP | Magnetic Induced Polarization (for Subsurface Characterization) |
| CDRE | Convolution Difference Resolution Enhancement |