| Acronym | Meaning |
| HFP | Hartree-Fock Perturbation |
| EDN | Eosinophil-derived Neurotoxin |
| NWEA | National Wood Energy Association |
| CIIR | Chlorinated Isobutylene-isoprene Rubber |
| CSP | Computational Singular Perturbation (math Modeling Method) |
| ANPP | 4-azido-2-nitrophenyl Phosphate |
| FLAIR | Fluid Attenuated Inversion Recovery |
| PIXE | Particle Induced X-ray Emission |
| MCH | Melanin Concentrating Hormone |
| NIWG | National Interagency Work Group |