| Acronym | Meaning |
 | MIMAROPA | Mindoro |
| TWIP | Take What Insurance Pays - When A Surgeon Agrees To Accept A Lower Payment Than He Ordinarily Would For A Procedure And Not Charge The Patient The Difference |
| SSBN | Nuclear-Powered Ballistic Missile Submarine (US Navy Hull Classification) |
| AFL | American Federation Of Labor - American Football League - Arena Football League - Australian Football League |
| ESO | European Southern Observatory |
| PRY | Paraguay (ISO 3166 Trigram) |
| BTW | By The Way |
| MDF | Main Distribution Frame - Medium-Density Fibreboard |
| GAO | U.S. Government Accountability Office |
| HIV | Human Immunodeficiency Virus |
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