| Acronym | Meaning |
 | PY | Paraguay (ISO 3166 Digram) - Person-Year -Portsmouth Yardstick |
| LAT | Lowest Astronomical Tide (nautical Charts) |
| EOSAT | Earth Observation Satellite |
| CINC | Commander In Chief |
| GNB | Guinea-Bissau (ISO 3166 Trigram) |
| OSI | Office Of Strategic Influence - Ontario Swine Improvement - Open Source Initiative - Open Systems Interconnection |
| SV | El Salvador (ISO 3166 Digram) -Sportverein (German For Sport Association |
| B2E | Business-to-employee Electronic Commerce |
| PASGT | Personnel Armor System |
| PFLAG | Parents |
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