| Acronym | Meaning |
 | DND | Department Of National Defence (Canada) - Do Not Disturb |
| HEO | Highly Elliptical Orbit |
| AOA | Argonne National Laboratory -Angolan Kwanza (ISO 4217 Currency Code) -Award Of Arms (heraldry) |
| BLZ | Belize (ISO 3166 Trigram) |
| MCDL | Model Composition Definition Language |
| UWO | University Of Western Ontario |
| HIM | His (or Her) Imperial Majesty |
| RCZ | Rear Combat Zone |
| HCCI | Homogeneous Charge Compression Ignition |
| PSYOP | Psychological Operations |
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