| Acronym | Meaning |
| CLOS | Common Lisp Object System |
| PPM | Parts Per Million |
| DNAW | Day Night All Weather |
| STA | Scheduled Time Of Arrival - Surveillance And Target Acquisition |
| QA | Qatar (FIPS 10-4 Country Code; ISO 3166 Digram) |
| NHB | New Hebrides (ISO 3166 Trigram; Obsolete 1980) |
| ER | Emergency Room -Eritrea (ISO 3166 Digram; FIPS 10-4 Country Code) |
| IANAL | I Am Not A Lawyer |
| ETM | Enhanced Thematic Mapper |
| NNW | North North-West |