| Acronym | Meaning |
| OGDR | Optogalvanic Double Resonance |
| AISIT | Automatic Intelligent Sampler For Inorganic Trace Constituents |
| STS | Space Transportation System |
| UCM | Unresolved Complex Mixt. |
| VQMC | Variational Quantum Monte Carlo |
| IAP | Intracisternal A-particle |
| AMAP | Automated Molecular Assembly Plant |
| CCIX | Continuous Countercurrent Ion Exchange |
| SRLS | Stimulated Raman Loss Spectroscopy |
| QSSPC | Quasi-steady-state Photoconductance |