| Acronym | Meaning |
| HEC | Human Equivalent Concentration |
| ODC | Orientation Distribution Coeffs. |
| ERAST | Environmental Research Aircraft And Science Technology |
| HWR | Heavy Water Reactor |
| LO | Localized Orbital |
| DCP | Dual Circular Polarization |
| ZBLAN | Zirconium Barium Lanthanum Aluminum Sodium Fluoride |
| CAA | Computer Aided Analysis |
| APA | Adiabatic Perturbation Approxn. (for Quantum Calcns. On Fermi Superfluids) |
| IMROX | Immersed Rotation Oxidation |