| Acronym | Meaning |
 | STDM | Statistical Time Division Multiplexing |
| SWOT | Strengths |
| DFAS | (U.S.) Defense Finance And Accounting Service |
| ACCA | Automatic Cloud Cover Assessment |
| CA | Calcium |
| YU | York University -former Yugoslavia (ISO 3166 Digram |
| NAPS | Navy Acquisition Procedures Supplement |
| ORR | Oak Ridge Reservation (U.S. DOE) - Office Of Rail Regulation (UK Government) - Office Of Refugee Resettlement - (CIA) Office Of Research And Reports - Operational Readiness Rate - Operational Readiness Review |
| GD | Scottish Gaelic Language (ISO 639-1 Code) |
| SSGN | Nuclear-Powered Guided Missile Submarine (US Navy Hull Classification) |
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