| Acronym | Meaning |
| PTX | Pertussis Toxin |
| CNDO/2D | Complete Neglect Of Differential Overlap With Deorthogonalization |
| RBS | Ribosome Binding Site |
| UPTF | Upper Plenum Test Facility |
| NSTX | National Spherical Torus Experiment |
| SMB | Simulated Moving Bed |
| ASHES | Axial Seamount Hydrothermal Emissions Study |
| PNO | Pair Natural Orbital |
| BSHC | Break Specific Unburned Hydrocarbons |
| POP | Persistent Organic Pollutant |