| Acronym | Meaning |
 | LA | Lanthanum |
| DORA | Defence Of The Realm Act |
| OHHLA | Original Hip-Hop Lyrics Archive |
| SWORDS | Special Weapons Observation Reconnaissance Detection System |
| TPTB | The Powers That Be (often Used To Refer To The People Responsible For The Content Of TV Series Or Movies) |
| APC | Armoured Personnel Carrier - Armour Piercing Capped (ammunition) |
| PWR | Pressurized Water Reactor |
| GCF | Greatest Common Factor |
| IRM | Illinois Railway Museum - Inzhenernaya Razvedyvatelnaya Mashina (Russian ?????????? ???????????????? ?????? |
| LDL | Low-Density Lipoprotein |
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