| Acronym | Meaning |
| ISR | Intelligence |
| ETA | Estimated Time Of Arrival -Euzkadi Ta Azkatasuna (etta |
| AFSPC | Air Force Space Command |
| RKBA | Right To Keep And Bear Arms (Second Amendment To The United States Constitution) |
| DS | Dear Son (increasingly Prevalent On Social Mailing Lists |
| GNRH | Gonadotropin-Releasing Hormone |
| CAT | Catalan Language (ISO 639-2 Code) |
| SYSML | System Modeling Language |
| LLC | Limited Liability Company |
| C2PC OR C?PC | Command And Control Personal Computer |