| Acronym | Meaning |
| OO | Object Oriented - Over & Out |
| UKR | Ukrainian Language (ISO 639-2 Code) |
| SECDEF | (U.S.) Secretary Of Defense |
| TT | Tatar Language (ISO 639-1 Code) |
| KW | Cornish Language (ISO 639-1 Code) |
| ECT | ElectroConvulsive Therapy |
| CRT | Cardiac Resynchronization Therapy - Cathode Ray Tube - Chinese Remainder Theorem |
| GLG | Galician Language (ISO 639-2 Code) |
| IB | International Baccalaureate |
| SNR | SuperNova Remnant - Signal-to-Noise Ratio |