| Acronym | Meaning |
 | OBS | Observation/Observer - Obsolete - Obstacle -Off Balance Sheet - Optical Burst Switching (IEEE) - Organic Brain Syndrome - Organization(al) Breakdown Structure |
| AIMP | Aurora Incremental Modernization Project |
| NAVSPASUR | U.S. Naval Space Surveillance System |
| TVG | Tick |
| CTU | Counter Terrorist Unit (fictional Branch Of The Central Intelligence Agency In The Television Action Series 24) |
| WDWR | Walt Disney World Resort |
| NW | Nanowatt |
| BSP | Between-Show Promotion - Binary Space Partitioning - Board Support Package - British Standard Pipe (screw Thread) -Business-sponsored - Bone Sialoprotein |
| DPICM | Dual-Purpose Improved Conventional Munition |
| POTS | Plain Old Telephone Service (cf. PANS) - Postural Orthostatic Tachycardia Syndrome |
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