Noun
(computing, networking) Initialism of extended unique identifier.
(European Union) Initialism of European Union institution.
Source: en.wiktionary.orgThe notation kBtu or KBTU is often used for thousand BTU, in sizing of heating systems and in the Energy Use Index (EUI) expressed as thousand BTU annual energy use per square foot of building. Source: Internet
The IEEE claims trademarks on the names EUI-48 citation and EUI-64, citation in which EUI is an abbreviation for Extended Unique Identifier. Source: Internet