| Acronym | Meaning |
| NGI | Next Generation Internet |
| OSCAR | Oxidant-Scavenging Characteristics Of April Rains |
| AMU | Atomic Mass Unit |
| ERTD | Environmental Research & Technology Division |
| IPU | Instrument Processor Unit |
| TDR | Tracking And Data Relay |
| CARP | Carpenter Research Project |
| (C4) | Center For Clouds |
| GPM | Geopotential Meter |
| RSCS | Remote Spooling Communications Subsystem |