| Acronym | Meaning |
| PDDO | Projection Of Diatomic Differential Overlap |
| EEDF | Electron Energy Distribution Function |
| UCEPA | Unitary Coupled Electron Pair Approximation |
| IWS | Ionizing Wet Scrubber |
| MASIF | Measurement And Analysis Of Surface Interaction Forces |
| FLISA | Fluorescence-linked Immunosorbent Assay |
| IDP | Interplanetary Dust Particle |
| QCFF/PI | Quantum Mechanical Consistent Force Field Method For Pi-electron Systems |
| MERT | Medical Emergency Response Team |
| NWQMC | National Water Quality Monitoring Council |