| Acronym | Meaning |
 | PKI | Public Key Infrastructure (cryptography) |
| ISIS | Institute For Science And International Security |
| RBI | Runs Batted In |
| RTFM | Read The Fucking/Fine Manual |
| FARC | Fuerzas Armadas Revolucionarias De Colombia (Spanish |
| D/B/A | Doing Business As |
| DU | Depleted Uranium -Dust (METAR Code) |
| UUV | Unmanned Underwater Vehicle |
| UE | Unit Of Employment |
| NI | Nickel |
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