| Acronym | Meaning |
| RPG | (US-CA) Regional Planning Group - Report Program Generator - Rocket Projectile Gun - Rocket-Propelled Grenade - Role-Playing Game |
| RGBI | Red Green Blue Intensity (ditto) |
| SA | Sanskrit Language (ISO 639-1 Code) |
| NLD | Dutch Language (ISO 639-2 Code) |
| TNT | TriNitroToluene |
| SETI | Search For ExtraTerrestrial Intelligence |
| YHBT | You Have Been Trolled |
| JCIET | Joint Combat Identification Evaluation Team |
| T | Tera - Tesla - Tritium |
| IIRC | If I Recall/Remember Correctly |