| Acronym | Meaning |
 | CAA | Canadian Automobile Association - (NORAD) Center For Aerospace Analysis - (U.S.) Center For Army Analysis - (U.S.) Clean Air Act - (U.S. Army) Concepts Analysis Agency - Civil Aviation Authority - Colonial Athletic Association |
| AMS | Agriculture Marketing Service - American Mathematical Society |
| RTI | Run-Time Infrastructure (Simulation) |
| RADB | Real America Database - Resource Assessment Database - Reunion Address DataBase - Rice Allelopathy Data Base - Routing Arbiter Data Base |
| NOSA | NATO OSI Security Architecture |
| FZFG | Freezing Fog (METAR Code) |
| HIMAD | High To Medium Altitude Air Defence (see Also H/MAD) |
| SWALK | Sealed With A Loving Kiss |
| UFC | Ultimate Fighting Championship |
| SNR | SuperNova Remnant - Signal-to-Noise Ratio |
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