| Acronym | Meaning |
| ATG | Antigua And Barbuda (ISO 3166 Trigram) |
| OOP | Object-Oriented Programming - Out Of Print |
| AJAX | Asynchronous JavaScript And XML |
| ZC | Zeptocoulomb |
| IAAF | International Association Of Athletics Federations (International Amateur Athletics Federation From 1912-2001) |
| MHHW | Mean Higher High Water (nautical Charts) |
| WRVS | Women's Royal Voluntary Service |
| LRIP | Low Rate Initial Production |
| MDG | Madagascar (ISO 3166 Trigram) -UN Millennium Development Goal |
| CASTOR | Canadian Automatic Small Telescopes For Orbital Research |