| Acronym | Meaning |
| QSMD | Quantum-stochastic Mol. Dynamics |
| TDGI | Time-dependent Gage-invariant (quantum Calcn. Method) |
| CLU-IN | Clean-Up Information Bulletin Board System (formerly OSWER-BBS) |
| GAR | Grain Aspect Ratio |
| BEHP | Bis(2-ethylhexyl) Phthalate |
| IAMAP | International Association Of Meteorology And Atmospheric Physics (ICSU) |
| RHO | Reduced Hamiltonian Orbital Method |
| HEV | High Endothelial Venule Cell |
| SIRMS | Stable Isotope Ratio Mass Spectrometry |
| WILT | Waste Interface Leaching Test |