| Acronym | Meaning |
| XBA | European Composite Unit (EURCO; Bonds Market Unit) (ISO 4217 Currency Code) |
| HMS | Helmet-mounted Display - Her Majesty's Ship (Royal Navy) |
| PAMELA | Pedestrian Accessibility And Movement Environment Laboratory |
| K/T | Cretaceous/Tertiary Boundary |
| IK | Inupiaq Language (ISO 639-1 Code) |
| ICBN | International Code Of Botanical Nomenclature |
| HESH | High-Explosive |
| EFSA | European Food Safety Authority |
| MLW | Mean Low Water (nautical Charts) |
| ZHA | Zhuang Language (ISO 639-2 Code) |