| Acronym | Meaning |
 | NVL | Night Vision Laboratory |
| ROS | Reactive Oxygen Species |
| AMSU | Association For Managers In Students' Unions - Aviation Mat?riel Screening Unit |
| SMD | Surface Mount Device |
| HDRA | Henry Doubleday Research Association |
| OSA | Order Of St. Augustine |
| LIE | Liechtenstein (ISO 3166 Trigram) |
| CMS | Centres For Medicare And Medicaid Services |
| OSS | Office Of Strategic Services (1942?1945 |
| BWA | Botswana (ISO 3166 Trigram) |
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