| Acronym | Meaning |
| DLM | Diffuse Layer Model (of Adsorption) |
| FCC | Flat Collect Circuit (in Solar Cell Array For Spacecraft) |
| NNLO | Next-to-next-to-leading Order |
| LHASA | Logic And Heuristics Applied To Synthetic Analysis |
| EGP | Evolved Gas Profile |
| TNAA | Thermal Neutron Activation Analysis |
| REPELS | Reemitted Positron Energy Loss Spectroscopy |
| COLTRIMS | Cold-target Recoil-ion-momentum Spectroscopy |
| SMC | Small Magellanic Cloud |
| SAC-CI | Symmetry-adapted Cluster Configuration Interaction (theory For Wave-function Expansion) |