U.A.R.
1.
United Arab Republic.
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UARS upper atmosphere research satellite
- Uart
noun acronym (electronics) 1. Universal Asynchronous Receiver Transmitter Universal Asynchronous Receiver/Transmitter UART universal asynchronous receiver transmitter
- UAS
1. unmanned aircraft (or aerial) system: an unmanned aircraft along with the equipment necessary to operate it. See also UAV. UAS 1. unavailable seconds 2. user agent service
- Uat
User Acceptance Testing
- Uaupes
noun 1. a river in S central Colombia, where it rises and is called the (Vaupes) flowing in NW Brazil E and SE to the Rio Negro River. 500 miles (805 km) long.