| Acronym | Meaning |
 | PSID | Pounds Per Square Inch Differential |
| PMB | Performance Measurement Baseline |
| ASR | Airport Surveillance Radar |
| HST | Hubble Space Telescope |
| MIDI | Musical Instrument Digital Interface |
| SKE | Specific Kinetic Energy |
| ADB | Apple Desktop Bus |
| NASCOM | NASA Communications Network |
| GRA | Graduate Research Assistant |
| NPC | National Processing Centers |
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