| Acronym | Meaning |
| IIRC | If I Recall/Remember Correctly |
| CD | Many |
| BMDO | (U.S.) Ballistic Missile Defense Organization (bim-do) |
| DRET | Defence Research Establishment Toronto (obsolete 2002) |
| DSPS | D.s.p. Suivre (Latin |
| MAPS | Monitoring Avian Productivity And Survivorship |
| PCN | Pitcairn Islands (ISO 3166 Trigram) |
| TIP | Thermal Identification Panel |
| HKG | Hong Kong (ISO 3166 Trigram) |
| GEOS | Graphical Environment Operating System |