originally: http://www.oclc.org/research/reference/acronyms/acronyms_pz.htm
PADI
Preserving Access to Digital Information
http://www.nla.gov.au/padi/
PCC
Program for Cooperative Cataloging
http://www.loc.gov/catdir/pcc/
PDF
Portable Document Format
http://www.webopedia.com/TERM/P/PDF.html
PICS
Platform for Internet Content Selection
http://www.w3.org/PICS/
POI
Persistent Object Identifiers
PMWG
Preservation Metadata Working Group
http://www.oclc.org/research/projects/pmwg/
PREMIS
PREservation Metadata: Implementation Strategies
http://www.loc.gov/standards/premis/
PURL
Persistent Uniform Resource Locator
http://purl.oclc.org/
RAC
Research Advisory Committee
RDF
Resource Description Framework
http://www.w3.org/RDF/
RDF-DC
Resource Description Framework - Dublin Core
RDN
Resource Discovery Network
http://www.rdn.ac.uk/
REST
REpresentational State Transfer
http://internet.conveyor.com/RESTwiki/moin.cgi/FrontPage
RIAO
Recherche d'Informations Assistee par Ordinateur
RLAC
Research Libraries Advisory Committee (OCLC)
http://www.oclc.org/membership/advisorycommittees/
RLG
Research Libraries Group
http://www.rlg.org/
RONDAC
Regional OCLC Network Directors Advisory Committee
RSLP
UK Research Support Libraries Programme
http://www.rslp.ac.uk/
RSS
Really Simple Syndication
RUSA
Reference and User Services Association
http://www.ala.org/rusaTemplate.cfm?Section=rusa
SCORM
Sharable Content Object Reference Model
SCURL
Scottish Confederation of University and Research Libraries
http://scurl.ac.uk
SEAALL
Southeastern Chapter of the American Association of Law Libraries
http://www.aallnet.org/chapter/seaall/
SGML
Standard Generalized Markup Language
http://www.w3.org/MarkUp/SGML/
SIGDOC
Special Interest Group for Documentation
http://www.acm.org/sigdoc/
SIGIR
Special Interest Group on Information Retrieval
http://www.acm.org/sigir/
SLA
Special Libraries Association
http://www.sla.org/
SOAP
Simple Object Access Protocol
http://www.w3.org/TR/SOAP/
SOLINET
Southeastern Library Network, Inc.
http://www.solinet.net/
SRU
Search & Retrieve URL Service
http://www.loc.gov/z3950/agency/zing/srw/sru.html
SRW
Search & Retrieve Web Service
http://www.loc.gov/z3950/agency/zing/srw/
SRW/U
Search & Retrieve Web Service/URL Service
STORD
Structured Text on Relational Databases
Tcl
Tool Command Language
http://www.tcl.tk/
TCP/IP
Transmission Control Protocol/Internet Protocol
UDC
Universal Decimal Classification
http://www.udcc.org/
UIUC
University of Illinois at Urbana-Champaign
http://www.uiuc.edu/
UKOLN
United Kingdom Office for Library and Information Networking
http://www.ukoln.ac.uk/
UNESCO
United Nations Educational, Scientific and Cultural Organization
http://www.unesco.org/
URI
Uniform Resource Identifier
http://www.w3.org/Addressing/
URL
Uniform Resource Locator
http://www.w3.org/Addressing/
VALA
Victorian Association for Library Automation, Inc.
http://www.vala.org.au
VIAF
Virtual International Authority File
http://www.oclc.org/research/projects/viaf/
W3C
World Wide Web Consortium
http://www.w3c.org/
WiLS
Wisconsin Library Services
http://www.wils.wisc.edu/
WSDL
Web Services Description Language
http://www.w3.org/TR/wsdl12/
XHTML
eXtensible HyperText Markup Language
http://www.w3.org/TR/xhtml1/
XML
eXtensible Markup Language
http://www.w3.org/XML/
XMP
eXtensible Metadata Platform
http://www.adobe.com/products/xmp/
XSL
eXtensible Stylesheet Language
http://www.w3.org/Style/XSL/
XSLT
XSL Transformations
http://www.w3.org/TR/xslt
Z39.50
"Z Thirty-Nine Dot Fifty"
http://lcweb.loc.gov/z3950/agency/
ZIG
Z39.50 Implementors Group
http://lcweb.loc.gov/z3950/agency/zig/