| Acronym | Meaning |
| ISI | Instrumentation Support Instruction |
| LSO | Large Solar Observatory |
| EV | Extravehicular |
| RAPCON | Radar Approach And Control |
| LCVG | Liquid Cooling And Ventilation Garment |
| OS | Orbiter CEI Specification |
| COSATI | Committee On Scientific And Technical Information |
| EMU | Engineering Model Unit |
| CIS | Contractor's Information Submittal |
| SPOM | STS Planning And Operations Management |