| Acronym | Meaning |
| HFPD | Hartree-Fock With Proper Dissociation (wave Function) |
| ACSL | Advanced Continuous Simulation Language |
| SCRPA | Separated Channel RPA |
| ACIS | Advanced CCD Imaging Spectrometer |
| PMC | Permanently Manned Capability (of Space Station) |
| ASA | At. Sphere Approxn. |
| VICAR | Visual Colorimeter For Atmospheric Research |
| PYS | Partial Yield Spectroscopy |
| FEEO | Fuel Efficient Engine Operation |
| AAD | Atomic Absorption Detector |