| Acronym | Meaning |
 | RWADA | Resident Weighted Average Daily Attendance (New York State Term Used In Public Education To Indicate The Size Of A School District |
| GTQ | Guatemalan Quetzal (ISO 4217 Currency Code) |
| PO | Dust Devil (METAR Code) -per Os (Latin |
| NWF | National Wildlife Federation |
| TATP | TriAcetone TriPeroxide |
| EVA | Extra-Vehicular Activity |
| KF | Kilofarad |
| LNER | London And North Eastern Railway |
| PBB | PolyBrominated Biphenyl |
| SSTO | Single-Stage To Orbit |
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