| Acronym | Meaning |
 | EO | Electro-Optics - Engagement Operations |
| TF | French Southern Territories (ISO 3166 Digram) -Task Force -Terafarad |
| AGN | Active Galactic Nucleus |
| RPG | (US-CA) Regional Planning Group - Report Program Generator - Rocket Projectile Gun - Rocket-Propelled Grenade - Role-Playing Game |
| LB | Lebanon (ISO 3166 Digram) |
| H | Henry - Hydrogen |
| GE | Germanium |
| CATK | Counterattack |
| RF | Radio Frequency - Receptive Field (neurophysiology) |
| RV | Reconnaissance Vehicle - Recreational Vehicle - Re-entry Vehicle |
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