| Acronym | Meaning |
| MRIR | Medium Resolution Infrared Radiometer |
| OMB | Office Of Management And Budget |
| NERVA | Nuclear Engine For Rocket Vehicle Application |
| OAO | Orbiting Astronomical Observatory |
| TPCE | Tank Pressure Control Experiment |
| PLBD | Payload Bay Doors |
| AC | Atlas Centaur |
| CCRS | Canada Centre For Remote Sensing |
| DIRBE | Diffuse Infrared Background Experiment |
| SWLC | Salt Water Leak Check |