| Acronym | Meaning |
| BRS | Biennial Reporting System |
| REOM | Reduced Equations Of Motion (method In Mol.-scattering Calcns.) |
| HDP | High-density Plasma |
| BJT | Bipolar Junction Transistors |
| FAKE | Fast Accurate Kinetic-energy (MO Method) |
| QUAL2E | Enhanced Stream Water Quality Model |
| PBMS | Photon Burst Mass Spectrometry |
| PIO | Paired Interaction Orbital |
| IRPTC | International Register Of Potentially Toxic Chemicals |
| LD | Laser Desorption |