| Acronym | Meaning |
| MC | Macao (FIPS 10-4 Territory Code) -Master Of Ceremonies -Megacoulomb -Military Cross (bravery Award) -Monaco (ISO 3166 Digram) -Mortar Carrier -Eleven Hundred (in Roman Numerals) |
| WRBWWRM | We Read Best What We Read Most |
| EFOA | European Fuel Oxygenates Association |
| ETA | Estimated Time Of Arrival -Euzkadi Ta Azkatasuna (etta |
| PTA | Parent-Teacher Association |
| SN | Senegal (ISO 3166 Digram) - Singapore (FIPS 10-4 Country Code) - Snow (METAR Code) - SuperNova-Screen Name |
| ISEN | Internet Search Environment Number |
| SPS | Standard Positioning Service (GPS) |
| PU | Guinea-Bissau (FIPS 10-4 Country Code) -Polyurethane -United States Miscellaneous Pacific Islands (ISO 3166 Digram; Obsolete 1986) |
| MAF | Maintenance Action Form |