| Acronym | Meaning |
| API | American Petroleum Institute |
| BARC | Bhabha Atomic Research Centre |
| UMF | User Master File |
| AMTS | Arctic Mesopause Temperture Study |
| THORPEX | The Observing System Research And Predictability Experiment |
| MAPR | Multi-angle Profiling Radar |
| APC | Ammonium Perchlorate |
| LM | Lumen |
| ELF | Extremely Low Frequency |
| SIGGRAPH | Special Interest Group On Graphics Of The Association Of Computing Machinery |