| Acronym | Meaning |
| MR-CI-PS | Multireference-CI-perturbatively Selected |
| AASE | Airborne Arctic Stratospheric Expedition |
| NDF | Neutral Detergent Fiber |
| OPW | Orthogonalized Plane Wave |
| SURF III | Synchrotron UV Radiation Facility (at NIST) |
| DIP | Document Image Processing |
| ITRM | Inverse Thermoremanent Magnetization |
| CSCF | Complex Self-consistent Field |
| CHRIS | Chemical Hazards Response Info System |
| CXAES | Continuous X-ray-induced Auger Electron Spectroscopy |