| Acronym | Meaning |
| CI-TD-HG | Configuration Interaction Time-dependent Hartree Grid |
| PEIS | Programmatic Environmental Impact Statement |
| HY-CI | Hylleraas-configuration Interaction |
| ANEP | Association Of Northwest Environmental Professionals |
| RSPA | Research And Special Programs Administration (Dept. Of Transportation) |
| BCNTF | Biofilm-Controlled Nitrifying Trickling Filter (for Wastewater Treatment) |
| PVS | Performance Verification Sample |
| FDPM | Frequency-domain Photon Migration |
| ACSTM | Alternating Current Scanning Tunneling Microscopy |
| MINDO | Modified Intermediate Neglect Of Differential Overlap |