| Acronym | Meaning |
| LEIS | Low-Energy Ion Scattering Spectroscopy |
| AQTAD | Air-Quality Technical Assistance Demonstration |
| IEHMO | Iterative Extended Hueckel Molecular Orbital |
| AGID | Agar Gel Immunodiffusion |
| NDCT | Natural Draft Cooling Tower |
| SPO | Spin Projection Operator |
| CAE | Cis-acting Element |
| CEM | Corrected Effective Medium (for Atomic Interactions) |
| SCTA | Sample Controlled Thermal Analysis |
| KASIMA | Karlsruhe Simulation Model Of The Middle Atmosphere |