| Acronym | Meaning |
 | PRI | Puerto Rico (ISO 3166 Trigram) |
| AZE | Azerbaijan (ISO 3166 Trigram) |
| WYSIWYP | What You See Is What You Print / What You See Is What You Pay (wizzy-whip) |
| SD | Sheriff's Department - Smoke/Decontamination-South Dakota (postal Symbol) - Sudan (ISO 3166 Digram) |
| GYY | Gary/Chicago International Airport (IATA Airport Code) |
| YM | Yottametre |
| RFC | Request For Comments - Royal Flying Corps (WWI Precursor To RAF) |
| RWADA | Resident Weighted Average Daily Attendance (New York State Term Used In Public Education To Indicate The Size Of A School District |
| KL | Kalaallisut Language (ISO 639-1 Code) |
| GPIB | General-Purpose Instrumentation/Interface Bus |
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