| Acronym | Meaning |
 | PYG | Paraguayan Guarani (ISO 4217 Currency Code) |
| MHC | Major Histocompatibility Complex |
| OTA | Office Of Technology Assessment -Orthodontic Technicians Association |
| ATG | Antigua And Barbuda (ISO 3166 Trigram) |
| SMS | Many |
| YPA | Yards Per Pass Attempt (football Statistic) |
| GNQ | Equatorial Guinea (ISO 3166 Trigram) |
| PS | Picosiemens |
| CHAMPUS | (U.S.) Civilian Health And Medical Program Of The Uniformed Services |
| EI | Ireland (FIPS 10-4 Country Code; From ire) |
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