| Acronym | Meaning |
| SEMPI | Singly Excited Modified Perturbation Theory |
| ALPS | Autoimmune Lymphoproliferative Syndrome |
| ICI | Industrial, Commercial, And Institutional |
| MODIS | Moderate Resolution Imaging Spectroradiometer |
| EFTEM | Energy-filtering Transmission Electron Microscopy |
| HAPPS | Hazardous Air Pollutant Prioritization System |
| FSCC | Fock Space Coupled Cluster |
| FCPC | Full-core Plus Correlation (calcn. Method) |
| BEKP | Backscattered Electron Kikuchi Pattern |
| NPOESS | National Polar Orbiting Environmental Satellite System |