| Acronym | Meaning |
 | MMDB | Master Measurement Data Base |
| MSOIN | Minor Subcontractor Or IDWA Notification |
| CCB | Change Control Board |
| OHF | Occupational Health Facility |
| PH | Hydrogen-Ion Concentration (Alkalinity) |
| OMDR | Operations And Maintenance Data Record |
| PO | Personnel Office (KSC Directorate) |
| DS | Data Storage |
| GT | Greater Than |
| SSC | Subsystem Sequence Controller |
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