| Acronym | Meaning |
| ECT | Emission-Computed Tomography |
| BHT | Brinell Hardness Test |
| APG | Antisymmetrized Product Of Geminals (wave Function) |
| GLIMPSE | Galactic Legacy Infrared Mid-Plane Survey Extraordinaire |
| TRI | Toxic Release Inventory |
| GRPA | Generalized Random-phase Approximation |
| APM | Atom Probe Microanalysis |
| PTM | Perturbation Trajectory Method (in Gas-surface Collision Dynamics) |
| SIC | Std. Industrial Code |
| EFOCS | Evanescent Fiber Optic Chemical Sensors |