| Acronym | Meaning |
| CISD | Configuration Interaction With Single And Double Excitation |
| HIM | Hydroxy Interlayered Minerals (clay Minerals) |
| QDO | Quantum-defect Orbital (theory) |
| PAMSA | PCR Amplification Of Multiple Specific Alleles |
| MIS 5 | Marine Isotope Substage 5e |
| SU | Standard Unit |
| AAETA | Atomic Spectroscopy With Electrothermal Atomization |
| JEIP | Joint Emission Inventory Program |
| AERL | Air And Energy Engineering Research Laboratory |
| LARIS | Laser Ablation And Resonance Ionization Spectroscopy |