| Acronym | Meaning |
| JDEM | Joint Dark Energy Mission |
| NSG | National System For Geospatial-Intelligence |
| HSBC | Hongkong And Shanghai Banking Corporation |
| KGB | Komitet Gosudarstvennoy Bezopasnosti (Russian Committee For State Security) (1954-1991) |
| W/ | With: Software W/Documentation. Typically Used In Advertising Or To Abbreviate Headings. Never Used In Formal Body Text. |
| PPO | PolyPhenylene Oxide |
| AC | Attocoulomb |
| AAR | After-Action Review - Association Of American Railroads |
| TOGS | Thermal Observation Gunnery Sight |
| NFPA | National Fluid Power Association (USA) |