| Acronym | Meaning |
| TWN | Republic Of China (Taiwan) (ISO 3166 Trigram) |
| MIRA | MILAN Infra-Red Acquisition (thermal Sight) |
| HMD | Heard And McDonald Islands (ISO 3166 Trigram) |
| DLSC | U.S. Defense Logistics Services Center - U.S. Defense Logistics Support Command - Department Of Library Special Collections (Western Kentucky University Libraries) - Direct Loan Servicing Center - Directorate Of Land Strategic Concepts (Canada) - Dominica |
| ZW | Zettawatt - Zimbabwe (ISO 3166 Digram) |
| WS | Samoa (ISO 3166 And FIPS 10-4 Country Code Digram; From West Samoa) -Writer To The Signet (a Scottish Solicitor) |
| J1 | Joint [Manpower &] Personnel Directorate |
| ZG | Zeptogram |
| G20 | Group Of 20 (G8 + Argentina |
| OP CIT | Opere Citato (Latin |