| Acronym | Meaning |
| IRIS | Italian Research Interim Stage |
| SSS | Software Segment Specification |
| USACE | United State Army Corps Of Engineers |
| NICI | Negative Ion Chemical Ionization |
| UNIX | A Computer Operating System Developed By AT&T And Modified Extensively By The University Of California At Berkeley |
| BRL | Ballistics Research Laboratory |
| RMC | RAF Management Council |
| AMPS | Antarctica Mesoscale Prediction System |
| DSA | Directory System Agent |
| RAM | Research Application Module |