| Acronym | Meaning |
| ECL | Emitter Coupled Logic (electronics) |
| SND | Sindhi Language (ISO 639-2 Code) |
| CANDU | CANada Deuterium Uranium (nuclear Reactor Design) |
| ADDIE | Analyze Design Develop Implement And Evaluate |
| NAV | Navigation[al] |
| NASS | National Association Of Secretaries Of State [3] |
| HM | Heard Island And McDonald Islands (ISO 3166 Digram; FIPS 10-4 Territory Code) |
| RPG | (US-CA) Regional Planning Group - Report Program Generator - Rocket Projectile Gun - Rocket-Propelled Grenade - Role-Playing Game |
| NR | Nauru (ISO 3166 And FIPS 10-4 Country Code Digram) |
| ZN | Zinc |