Acronym |  | Definition | Topics | External Links | |
U |
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Unit |
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U/L |
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Universal / Local |
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U/L |
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Upload |
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UA |
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Universal Access |
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UA |
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Unnumbered Acknowledgment |
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UA |
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User Account |
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UA |
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User Agent |
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UAA |
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Universal Audio Architecture |
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UAAG |
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(WAI) User Agent Accessibility Guidelines |
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UAC |
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User Account Control |
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UAE |
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Unrecoverable Application Error |
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UAE |
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User Agent Entity |
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UAGP |
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Universal Accelerated Graphics Port |
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UAL |
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User Agent Layer |
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UAM |
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User Authentication Method |
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UAOS |
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User Alliance for Open Systems |
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UAPDU |
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User Agent Protocol Data Unit |
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UART |
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Universal Asynchronous Receiver Transmitter |
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UAS |
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UnAvailable Second |
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UASFE |
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UnAvailable Second, Far End |
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UASL |
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User Agent SubLayer |
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UAV |
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Unmanned Aerial Vehicle |
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UBCIM |
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Universal Bibliographic Control / International MARC |
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UBE |
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Unsolicited Bulk Email |
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UBR |
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Unspecified Bit Rate |
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UC |
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Unified Communications |
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UCAID |
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University Corporation for Advanced Internet Development |
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UCAN |
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Unified Community Anchor Network |
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UCC |
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Uniform Code Council (now known as GS1) |
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UCC |
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Uniform Commercial Codes |
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UCD |
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Uniform Call Distribution |
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UCE |
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Unsolicited Commercial Email |
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UCF |
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Underground Computing Foundation |
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UCF |
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Universal Communication File (.ucf media file format) |
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UCF |
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Universal Communication Format |
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UCITA |
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Uniform Computer Information Transaction Act |
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UCL |
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University College, London |
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UCMJ |
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Uniform Code of Military Justice |
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UCR |
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Under Color Removal |
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UCS |
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Uniform Communication Standard / Unified Communications System |
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UCS |
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Universal Character Set (ISO/IEC 10646) |
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UCS |
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Universal Component System |
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UCW |
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Unit Control Word |
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UD |
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Unit Data |
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UDA |
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Universal Data Access |
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UDA |
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User-Defined Applications |
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UDC |
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Universal Digit Channel |
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UDC |
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User Defined Command |
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UDDI |
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Universal Description, Discovery, and Integration |
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UDF |
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Uniqueness Database File |
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UDF |
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Universal Disk Format |
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UDF |
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User Defined Function |
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UDI |
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(Bluetooth) Unrestricted Digital Information |
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UDI |
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Unified Display Interface |
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UDI |
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Uniform Driver Interface |
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UDLC |
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Universal Data Link Control |
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UDM |
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Unstructured Data Management |
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UDMA |
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Ultra Direct Memory Access |
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UDO |
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Ultra Density Optical |
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UDO2 |
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Ultra Density Optical v2 |
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UDP |
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User Datagram Protocol (RFC 768) |
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UDRP |
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Uniform Dispute Resolution Policy |
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UDT |
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User Defined Type |
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UDVM |
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Universal Data Voice Multiplexer |
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UE |
|
User Element |
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UE |
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User Equipment |
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UEFI |
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Unified Extensible Firmware Interface |
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UEL |
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Universal Exit Language |
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UEV |
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(Microsoft) User Experience - Virtualization (usually as UE-V) |
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UFD |
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User Friendly Diagnostics |
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UFDP |
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UnFormatted Data Processor |
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UFOUO |
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Unclassified // For Official Use Only (usually as U//FOUO) |
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UFS |
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Unix File System |
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UGA |
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(EFI) Universal Graphic Adapter (protocol) |
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UHD |
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Ultra High Density (media) |
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UHF |
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Ultra High Frequency |
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UHQ |
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Ultra High Quality (image technology) |
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UI |
|
Unit Interval |
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UI |
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UNIX International |
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UI |
|
Unnumbered Information |
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UI |
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Unnumbered Interrupt |
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UI |
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User Interface |
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UIC |
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User Identification Code |
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UID |
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User IDentification |
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UIDE |
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User Interface Design Environment |
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UIGEA |
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Unlawful Internet Gambling Enforcement Act (of 2006) |
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UIMS |
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User Interface Management Systems |
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UIS |
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Universal Information Services |
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UIST |
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User Interface Software and Technology (symposium) |
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UITP |
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Universal Information Transport Plan |
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UK |
 |
United Kingdom (also as .uk ccTLD) |
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UKCCIS |
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United Kingdom Council for Child Internet Safety |
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UKRA |
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United Kingdom Registration Authority |
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UL |
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Underwriters Laboratories |
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UL |
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Upload (sometimes as U/L) |
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UL |
|
User Location |
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ULA |
|
Upper Layer Architecture |
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ULCC |
|
University of London Computing Centre |
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ULCT |
|
Upper Layer Conformance Testing |
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ULP |
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Upper Layer Protocol / Upper Layer Process |
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ULTRA |
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Underground Legion of Terroristic Research Activists |
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ULV |
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Ultra-Low Voltage (processor) |
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UMA |
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Upper Memory Area |
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UMB |
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Upper Memory Block |
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UMD |
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User Manager for Domains |
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UMDF |
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User-Mode Driver Framework |
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UME |
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UNI Management Entity |
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UML |
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Unified Modeling Language |
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UMPDU |
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User Message Protocol Data Unit |
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UMTS |
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Universal Mobile Telecommunications System |
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UN |
|
United Nations |
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UNA |
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Upstream Neighbors Address |
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UNC |
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Uniform Naming Convention / Universal Naming Convention |
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UNDI |
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Universal Network Device Interface |
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UNDP |
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United Nations Development Programme |
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UNE |
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Ubuntu Netbook Edition |
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UNHIOL |
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University of New Hampshire InterOperability Lab |
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UNI |
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User-to-Network Interface (ATM specification) |
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UNICODE |
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Unique, Universal, and Uniform character enCoding |
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UNISTAR |
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UNIversal Single call Telecommunications Answering and Repair |
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UNJEDI |
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United Nations Joint Electronic Data Interchange |
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UNMA |
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Unified Network Management Architecture |
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UNTDI |
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United Nations Trade Data Interchange |
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UOF |
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Uniform Office Format / Unified Office Format |
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UOF |
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Unusual Order Form |
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UOW |
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Units Of Work |
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UP |
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Unified Process |
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UP |
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Uni-Processor |
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UPC |
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Unique Porting Code |
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UPC |
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United Phreakers Coalition |
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UPC |
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Universal Product Code |
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UPC |
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Update Protect Checking |
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UPC |
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Usage Parameter Control |
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UPC |
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Utility Port Conditioner |
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UPH |
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Units Per Hour |
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UPI |
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United Phreakers Incorporated (sometimes as UPi) |
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UPI |
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United Press International |
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UPL |
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Unsecured Proxies List |
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UPN |
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Universal Product Number |
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UPN |
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User Principal Names |
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UPS |
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Uninterruptible Power Supply |
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UPS |
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Uninterruptible Power System |
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UPS |
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United Parcel Service |
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UPT |
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Universal Personal Telecommunications |
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UPTC |
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Unified Page Table Cache |
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UPU |
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Universal Postal Union |
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UPX |
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Ultimate Packer for eXecutables |
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URBAN |
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Undaground Rap Blastin Asiatic Newsletter |
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URD |
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Uncertainty Rule Dialect |
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URG |
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Urgent (flag) |
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URI |
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Uniform Resource Identifier |
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URISC |
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Ultimate Reduced Instruction Set Computer |
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URL |
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Uniform Resource Locator |
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URN |
 |
Uniform Resource Name |
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URSI |
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Union Radio Scientifique Internationale |
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US |
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Unit Separator (ASCII) |
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US |
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United States (official country code and as .us as ccTLD) |
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USA |
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Undedicated Switch Access |
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USA |
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United Software Association |
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USA |
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United States of America |
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USART |
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Universal Synchronous Asynchronous Receiver / Transmitter |
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USB |
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Universal Serial Bus |
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USB |
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Upper SideBand |
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USC |
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User Steering Committee |
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USCERT |
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United States Computer Emergency Readiness Team (usually as US-CERT) |
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US-CERT |
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United States Computer Emergency Readiness Team |
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USCIC |
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U.S. Country Information Center |
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USD |
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[U.S.] Under Secretary of Defense |
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USD |
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United States Dollar (currency) |
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USDN |
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United States Digital Network |
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USFDC |
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U.S. Financial Data Center |
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USGS |
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United States Geological Survey |
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USIBC |
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U.S. Integrated Business Center |
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USIPA |
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United States Internet Providers Association |
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USISPA |
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United States Internet Service Provider Association (formerly Commercial Internet Exchange) |
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USITA |
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United States Independent Telephone Association |
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USL |
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Unix System Laboratories |
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USM |
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UnSharp Masking |
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USMP |
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U.S. Manufacturing Planning |
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USNC |
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United States National Committee |
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USO |
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Universal Service Order |
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USO |
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Unix Software Operation |
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USOC |
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Universal Service Ordering Code |
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USP |
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Universal Sampling Plan |
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USPL |
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U.S. Price List |
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USPS |
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United States Postal Service |
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USPTO |
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United States Patent and Trademark Office |
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USR |
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USRobotics |
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USRA |
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Universities Space Research Association |
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USRT |
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Universal Synchronous Receiver Transmitter |
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USS |
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(VTAM) Unformatted Systems Service |
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USSS |
 |
United States Secret Service |
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USSTRATCOM |
 |
United States Strategic Command |
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USV |
|
User Services |
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UT |
|
Upper Tester |
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UTAM |
|
Unlicensed Transition And Management |
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UTC |
|
Unified Translation Cache |
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UTC |
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Universal Time Coordinated (correctly referenced as Coordinated Universal Time) |
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UTF |
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UCS Transformation Format |
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UTF |
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Unicode Transformation Format |
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UTF |
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Unified Threat Management |
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UTF |
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Universal Transfer Format |
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UTF-8 |
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UCS Transformation Format - 8-bit |
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UTM |
|
Universal Transverse Mercator |
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UTOPIA |
|
Universal Test and Operations PHY Interface for ATM |
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UTP |
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Unshielded Twisted-Pair |
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UTR |
 |
Unicode Techinical Report |
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UTRA |
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Universal Terrestrial Radio Access |
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UTTP |
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Unshielded Telephone Twisted Pair |
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UUA |
 |
Unisys Users Association |
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UUCICO |
|
Unix to Unix Copy Incoming Copy Outgoing |
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UUCP |
|
Unix-to-Unix Copy |
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UUID |
|
Universal Unique IDentifier |
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UUT |
|
Unit Under Test |
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UV |
|
UltraViolet |
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UVC |
|
Universal Voice Channel |
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UW |
|
Ultra-Wide (usually in reference to SCSI) |
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UWB |
|
UltraWideBand |
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UX |
|
User Experience |
|
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UXU |
 |
Underground Experts United |
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