| Acronym | Meaning |
 | PY | Paraguay (ISO 3166 Digram) - Person-Year -Portsmouth Yardstick |
| DTD | Digital Terrain Data |
| AYM | Aymara Language (ISO 639-2 Code) |
| OSCE | Organisation For Security And Cooperation In Europe |
| ADD | Analog Digital Digital (CD Quality) - Attention-Deficit Disorder - Administration On Developmental Disabilities |
| PNH | Paroxysmal Nocturnal Hemoglobinuria - Police Nationale D'Ha?ti (French |
| UESAC | Uppsala-ESO Survey Of Asteroids And Comets |
| CI | Chile (FIPS 10-4 Country Code) - C?te D'Ivoire (ISO 3166 Digram) -Counter-Intelligence |
| MST | Madison Symmetric Torus - Mountain Standard Time (UTC-7 Hours) |
| IPT | Integrated Product/Project Team |
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