| Acronym | Meaning |
 | GMFSC | Ground Mobile Forces Satellite Communications |
| JFC | Joint Force Commander |
| MWC | Maritime Warfare Centre (various Nations) |
| USGS | United States Geological Survey |
| MARBEF | Marine Biodiversity And Ecosystem Functioning |
| FM | Federal Magistrate (Australian Post-nominal) -Federated States Of Micronesia (postal Symbol; ISO 3166 Digram; FIPS 10-4 Territory Code) -Field Manual - Flight Manager - Frequency Modulation (electronics) |
| WOS | Wilson Ornithological Society |
| RW | Rwanda (ISO 3166 And FIPS 10-4 Country Code Digram) |
| ECHO | Each Community Helps Others (EPA Programme) - Educational Concerns For Hunger Organization - European Commission Host Organization - European Commission Humanitarian Aid Office -Exchange Clearing House - Expanded Characteristic Option -Explanatory Coheren |
| ISK | Icelandic Krona (ISO 4217 Currency Code) |
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