| Acronym | Meaning |
| R2PI | Resonant Two-photon Ionization |
| DAFNE | Double Annular Factory For Nice Experiments |
| CAN | Cellulose Acetate Nitrate |
| AWPCF | Air And Water Pollution Control Facilities |
| SQF | Second-quantized Formulation (in Many-body Quantum Theory) |
| DWS | Debris Washing System |
| MR-MBPT | Multireference-many-body Perturbation Theory |
| OMVPE | Organometallic Vapor-phase Epitaxy |
| ACR | Absolute Cryogenic Radiometer |
| UASB | Upflow Anaerobic Sludge Blanket |