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EIDX Collection of Acronyms and Abbreviations

gloss-alphabet.jpg (31557 bytes)
NOTE: (n.a.) = Not an Acronym; (obs) = Obsolete


U.S. State Abbreviations | Country Codes (used in Internet Addresses) | Airport Codes

Acronyms and Abbreviations - See also Glossary - U

This letter last updated 09 November 2002

U2 (n.a.) Name of rock group
U2 (n.a.) Name of type of miltary plane
U2U User-to-User, c.f. B2B
U2X See eB-U2X
UA United Airlines
UA User Agent (X.400)
UAE United Arab Emirates
UAO Unidentified Audible Object
UAP User Agent Protocol
UAR United Arab Republic
UART Universal Asynchronous Receiver Transmitter
UAW United Auto Workers
UBL Universal Business Language
UCAR University Corporation for Atmospheric Research, helps run CSNET
UCB University California at Berkley
UCC Uniform Code Council
UCL Upper Control Limit
UCS Uniform Communications Standard
UCS Universal code Character Set
UCSB U.S. Contributions Board
UDA Ulster Defence Association
UDA User Definable Assembler
UDC User-Defined Command
UDDI Universal Description, Discovery, and Integration
UDE Undetected Character Error
UDEF Universal Data Element Framework - for naming data elements
UDF Universal Disk Format
UDF User Defined Format
UDI Unilateral Declaration of Independence
UDI User-Defined Interface
UDL User Definable Link
UDP User Datagram Protocol, networking standard
UDR Ulster Defence Regiment
UEFA Union of European Football Associations
UFO Unidentified Flying Object
UFW United Farm Workers
UHF Ultra High Frequency
UHT Ultra Heat Treated (done to milk in Brit.)
UI Unix International
UI User Interface
uid User IDentity, unix value
UIG User Interest Group
UIG Utility Industry Group
UIL User Interface Language
UK United Kingdom (Great Britain + Northern Ireland)
UKTA United Kingdom Telecommunications Academy
UL Underwriters Laboratory
ULPA Ultra Light Particle Arrester
ULSI Ultra Large-Scale Integration
UMBC U Must Be Crazy
UMBC Univeristy of Maryland at Baltimore County
UML Unified Modeling Language
UMTS Universal Mobile Telecommunications System
UN United Nations
UN In EIDX tables, used as abbreviation for UN/EDIFACT
UN/ECE UN Economic Commission for Europe
UN*X UNIX spelled so as to avoid trademark problems, see UNIX


The electronic envelope segment for EDIFACT interchanges (probably for UN "Begin").
UNCLE United Network Command for Law Enforcement
UNCTAD UN Conference on Trade and Development
UNDP United Nations Development Programme
UNESCO UN Educational, Scientific and Cultural Organization


The electronic header segment for EDIFACT messages (probably for UN "Heading").
UNHCR UN High Commission on Refugees
UNICEF UN International Childrens' Emergency Fund
UNIX (n.a.) widely used OS, named after MULTICS, trademark AT&T
UNO UN Organization
UNRWA UN Relief and Works Agency
UNSM UN Standard Message
UNSPSC United Nations Standard Product and Services Code
UPC Universal Product Code
UPE Uniform Programming Environment
UPI United Press International
UPS Uninterruptable Power Supply
UPS United Parcel Service
URCLK Universal Receiver CLocK
URI Uniform Resource Identifier
URL Ubiquity now, Revenues Later
URL Uniform Resource Locator (Internet), a type of URL
URN Uniform Resource Name, like an alias for a URL
US United States
USA United States of America
USAD U.S. Analytical Division, APD
USAF US Air Force
USART Universal Synchronous/Asynchronous Receiver/Transmitter
USB Universal Serial Bus cable
USC University of Southern California
USENIX UNIX User's Association
USFL (obs) United States Football League
USFS US Forest Service
USG UNIX Support Group, in AT&T
USGA United States Golf Association
USGS US Geological Survey, Menlo Park
USIA US Information Agency
USL User Segmented Library
USMC US Marine Corps
USN United States Navy
USO United Service Organization, entertainers to troops
USPS United States Postal Service
USRT Universal Synchronous Receiver/Transmitter
USS United States Ship
USSR Union of Soviet Socialist Republics
UTB Under the Table Box
UTC Universale Temps Coordinee (French, "Coordinated Universal Time")
UTCLK Universal Transmitter CLocK
UTG Use Till Gone (rollover strategy)
UTP Unshielded Twisted Pair (wiring for LAN)
UTR Universal Transaction Record
UUCP UNIX-to-UNIX File Copy package, mainly used for mail transport
UX UNIX version of whatever the "UX" is attached to
UXB UneXploded Bomb