| Acronym | Meaning |
 | MDW | Chicago Midway International Airport In Chicago |
| CA | California (postal Symbol) - Canada (FIPS 10-4 Country Code; ISO 3166 Digram) - Catalonia -Civil Affairs - Close Armour - Computer Associates - Counter-Air |
| WNA | World Nuclear Association |
| SET | Staphylococcal EnteroToxin |
| SG | Senegal (FIPS 10-4 Country Code) - Singapore (ISO 3166 Digram) - Snow Grains (METAR Code) -Study Group |
| CR | Cree Language (ISO 639-1 Code) |
| RIMVS | Retinal Imaging Machine Vision System |
| FN | Femtonewton |
| RWF | Rwandan Franc (ISO 4217 Currency Code) |
| MRC | Maintenance Requirements Card |
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