| Acronym | Meaning |
 | ATSDR | Agency For Toxic Substances And Disease Registry |
| RFL | Restrictive Fire Line (military) |
| SPIE | Originally The Society For Photo-Optical Instrumentation Engineers (SPIE - The International Society For Optical Engineering 1981?2007 |
| PAN | STARRS -Panoramic Survey Telescope And Rapid Response System |
| ISMB | International Society Of Matrix Biologists |
| FU | Smoke (METAR Code) |
| OPS | Operations |
| MKT | Missouri-Kansas-Texas Railroad (1865-1989) - Mortal Kombat Trilogy |
| UNDE | Union Of National Defence Employees (Canada) |
| DIME | Dense Inert Metal Explosive |
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