| Acronym | Meaning |
| STOM | Scanning Tunneling Optical Microscopy |
| SWRRB | Simulation For Water Resources In Rural Basins |
| UDF | Unrestricted Dirac-Fock |
| ERCP | Endoscopic Retrograde Cholangiopancreatography |
| PIXIE | Polar Ionospheric X-ray Imaging Experiment |
| ESCORT | Error Self-compensation Reached By Tau-scrambling |
| BHA | 3-tert-butyl-4-hydroxyanisole Par |
| DF | Density Functional Formalism |
| ANADA | Abbreviated New Animal Drug Application |
| LID | Lased Induced Desorption |