| Acronym | Meaning |
| HTML | HyperText Markup Language |
| IPCC | Intergovernmental Panel On Climate Change |
| IONA | Islands Of The North Atlantic (alternate Name For Great Britain |
| ESP | Electronic Stability Program - Extra-sensory Perception -Spain (ISO 3166 Trigram) |
| FEDEP | Federation Development Process (Simulation) |
| NSG | National System For Geospatial-Intelligence |
| PT | Picotesla |
| HFAC | Human Factors (aytchfak) |
| MCI | Microwave Communications |
| ELT | Emergency Locator Transmitter |