| Acronym | Meaning |
 | AHA | American Heart Association |
| MEC | Maine Central Railroad (AAR Reporting Mark) - Manta |
| AS | American Samoa (postal Symbol; ISO 3166 Digram) - Australia (FIPS 10-4 Country Code) |
| MCIS | Mellon Collie And The Infinite Sadness |
| LAR | Light Armoured Reconnaissance - Logistics Assistance Representative |
| USB | Universal Serial Bus |
| HPV | Human Papilloma Virus |
| GLAST | Gamma-ray Large Area Space Telescope |
| SEC | U.S. Securities And Exchange Commission -Security - Southeastern Conference |
| OOP | Object-Oriented Programming - Out Of Print |
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