(military) Initialism of unauthorized absence. / (countable, UK, government) Initialism of unitary authority. / (countable, computing) Initialism of user agent.

Alternative spelling of µA

plural of UA

Initialism of Unmanned Aircraft/Aerial System(s).

(communication, programming) Abbreviation of OPC Unified Architecture (an industrial M2M communication protocol for interoperability developed by the OPC Foundation)

One of the Marquesas Islands in French Polynesia, situated in the northern group of the archipelago.

(computing, obsolete) unrecoverable application error (the standard Microsoft Windows error message in Win16)

Initialism of United Arab Emirates. / (computing) Unix Amiga emulator

(electronics) Initialism of universal asynchronous receiver transmitter.

The official residence of the Irish president, situated in Phoenix Park in Dublin.