| Acronym | Meaning |
 | DA | Danish Language (ISO 639-1 Code) - Deca |
| SHRA | Rain Showers (METAR Code) |
| CTIS | Central Tire-Inflation System |
| RON | Romanian Language (ISO 639-2 Code) |
| ARL | UK Admiralty Research Laboratory (1921?1977) - U.S. Army Research Laboratory - UIUC Aviation Research Laboratory |
| PPQT | Pre-Production Qualification Test |
| PG | Papua New Guinea (ISO 3166 Digram) -Parental Guidance (rating) |
| PPM | Parts Per Million |
| AANEAS | Anglo-Australian Near-Earth Asteroid Survey |
| TMS | Transcranial Magnetic Stimulation |
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