| Acronym | Meaning |
 | BEW | Base (or Biological) Equivalent Weight |
| DAS | Direct Absorption Spectroscopy |
| RRHO | Rigid Rotor-harmonic Oscillator (approxn.) |
| CBEN | Center For Biological And Environmental Nan |
| HBT | Heterojunction Bipolar Transistor |
| LIGO | Laser-interferometer Gravitational-wave Observatory |
| IVGTT | Intravenous Glucose Tolerance Test |
| BEWS | Biological Early Warning Systems |
| CME | Coronal Mass Ejection |
| LRAT | Long-range Atmospheric Transport |
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