| Acronym | Meaning |
| OD | Outside Diameter |
| IMP | Interface Message Processor ARPANET |
| BARRNET | Bay Area Regional Research Network |
| NMCC | NASCOM Management Control Center |
| A/H | Air Handling |
| NEXAIR | Next Generation Upper Air System |
| LEST | Large Earth-Based Solar Telescope |
| SSBLIM | Snow Shading Boundary Layer Interaction Measurement |
| AT | Accelerator Technology |
| DTF3.1 | Same As DTF3 |