| Acronym | Meaning |
 | SSE | Subsystem Element |
| WBC | White Blood Cells |
| PCCN | Provisioning Contract Control Number |
| AES | Atmospheric Exchange System |
| HAL/S | High Order Assembly Language For Shuttle Flight |
| PUV | Propellant Utilization Valve |
| GLS | Ground Launch Sequence (Sequencer) |
| V/C | Vector Control |
| S/S | Samples Per Second |
| MFMR | Multifrequency Microwave Radiometer |
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