| Acronym | Meaning |
| RIA | Regulatory Impact Analysis |
| MORT | Molecular Orbital Resonance Theory |
| CES | Committee On Earth Science (Office Science & Technology Policy) |
| AL:PE | Acidification Of Mountain Lakes: Paleolimnol. And Ecol. |
| QITMS | Quadrupole Ion Trap Mass Spectrometry |
| SSC | Superconducting Super Collider |
| CGDE | Contact Glow Discharge Electrolysis |
| RAS | Reflection-absorption Spectroscopy |
| SIR-C | Spaceborne Imaging Radar-C |
| SAXRD | Small-angle X-ray Diffraction |