| Acronym | Meaning |
| KR | Krypton |
| SRB | Solid Rocket Booster |
| XVIII | Eighteen (in Roman Numerals) |
| IBO | Igbo Language (ISO 639-2 Code) |
| OOP | Object-Oriented Programming - Out Of Print |
| AWP | Awaiting Parts (SM&R Code) |
| NB | Niobium |
| WCS | Weapon Control Status - Wildlife Conservation Society |
| SDN | Sudan (ISO 3166 Trigram) |
| NFPA | National Fluid Power Association (USA) |