| Acronym | Meaning |
| NPSO | Nonpaired Spatial Orbital |
| IWS | Ionizing Wet Scrubber |
| HIERD | Heavy Ion Elastic Recoil Detection |
| CEPP | Chemical Emergency Preparedness Plan |
| SORP | Southern Oxidants Research Program |
| NMDS | Nonmetric Multidimensional Scaling |
| ISE | Iterative Secular Equation (method For Solving The Schroedinger Equation) |
| AEFCA | All-electron Frozen-core Approximation |
| DAS | Double Antibody Sandwich |
| IEV | Independent Event (model In Ion-atom Collisions) |