| Acronym | Meaning |
| ERCIM | European Research Consortium For Informatics And Mathematics |
| DS | Dear Son (increasingly Prevalent On Social Mailing Lists |
| RPM | Red Hat Package Manager |
| UM | U.S. Minor Outlying Islands (postal Symbol; ISO 3166 Digram) |
| PUP | Pull-Up Point |
| AFES | Automatic Fire Extinguishing System |
| RADC | Region Air Defence Commander |
| TCHD | Truck Cargo Heavy Duty |
| ETLA | Extended TLA |
| TRL | Technology Readiness Level |