| Acronym | Meaning |
| PSIT | Plasma Source Ion Trap |
| NPO | National Program Office |
| SAMS | Stratospheric And Mesospheric Sounder |
| PTGF | Perturbative-type Green Function |
| LET | Linear Energy Transfer (in Spacecraft Power Systems) |
| TAN | Total Acid Number |
| HARMS | High Aspect Ratio Microstructure |
| IOSH | Institution Of Occupational Safety And Health |
| CLA | Conjugated Linoleic Acid |
| ASAS | Advanced Solid State Array Spectrometer |