| Acronym | Meaning |
| MERL | Materials Equipment Requirement List |
| DCMB | Development Configuration Management Board |
| IDO | InterdivisionalOperations |
| NCIU | Network Common Interface Unit |
| GTU | Glycol Trim Unit |
| FCAF | Flight Crew Accommodations Facility |
| S/A | Subassembly |
| EMU | Extravehicular Mobility Unit |
| R&Z | Range And Zero |
| SAMTO | Space And Missi E Test Organization (VAFE3) |