| Acronym | Meaning |
 | SE | Seychelles (FIPS 10-4 Country Code) - South-East - Sweden (ISO 3166 Digram) -Synthetic Environment - System Engineering |
 | ON | Ontario (postal Symbol) |
 | ISM | Industrial |
 | SIMLAS | Soldier Integrated Multipurpose Laser System |
 | SWAP | Surface Waters Acidification Programme |
 | HMM | Hidden Markov Model |
 | DARO | (U.S.) Defense Airborne Reconnaissance Office |
 | NSO | National Standardization Office (ABCA) |
 | VII | 7 (in Roman Numerals) |
 | ETLA | Extended TLA |