| Acronym | Meaning |
| IE | Interlingue Language (ISO 639-1 Code) |
| RPN | Reverse Polish Notation |
| MIRV | Multiple Independent Reentry Vehicle |
| ASTM | American Society For Testing And Materials |
| DTD | Digital Terrain Data |
| MOS | Military Occupational Specialty -Mit Out Sound / Motor Only Sync -Mobile Object System - Model Output Statistics - Multiplayer Online Services |
| EROS | Earth Resources Observation System |
| COSCOM | Corps Support Command (military) |
| SAT | Formerly Scholastic Aptitude Test And Scholastic Assessment Test; Now Known Solely By The Initials - Small Arms Trainer |
| MOTESS | Moving Object And Transient Event Search System |