Abbreviations

المختصرات

 

A B  C  D  E  F G  H  I  J  K L  M  N O P Q R S T U V W XYZ

 

A

A

annual

A.B.

Artium Baccalaureus

A.C.
alternating current +
*ante Christum

a.c.

alternating current

A.C.S.

autograph card signed

A.C.T.

Australian Capital Territory

A.D.S.

autograph document signed

a.e.g.

all edges gilt

A.H.

Anno Hegirae +
*After Hegira

A.L.S.
autograph letter signed
A.N.S.
autograph note signed

A.R.

aspect ratio

a/c

alternating current

A/D, A-D
Analog to Digital
A/P
Accounts Payable
A/R
Accounts Receivable
a/s/l
A coded question frequently used in teenage chats. 
When you see someone type a/s/l?, they are asking 
for your age, sex, and location. Use your judgment 
whether to respond or not

A/UX

Apple unix

AA
Auto Answer
AAA
authentication, authorization, and accounting. 
Pronounced "triple a."
AAAS
American Association for the Advancement of Science
AAB
All-to-All Broadcast

AACR

Anglo-American Cataloguing Rules

AAD

analog analog digital

AAL

American Association of Law Libraries +
*Association of Assistant Librarians +
*Asynchronous Transfer Mode Adaption Layer +
*ATM Adaptation Layer

AAL1

ATM adaptation layer 1

AAL2

ATM adaptation layer 2

AAL3/4

ATM adaptation layer 3/4

AAL5

ATM adaptation layer 5

AALS
Association of American Library Schools

AAMOF

as a matter of fact

AAP
Applications Access Point [DEC] +
*Association of American Publishers, Inc.
AARP
AppleTalk Address Resolution Protocol
AAS
All-to-All Scatter

aa's

author's alterations

AASL

American Association of School Librarians (ALA division)

AASP
ASCII Asynchronous Support Package
aastak
aastakaik (AACR2)
AAT
Average Access Time
AATP
Authorized Academic Training Program [Microsoft]
ABC
Atanasoff-Berry Computer  (First digital 
calculating machine that used vacuum tubes) +
*automatic brightness control

Abdr.

abdruck (AACR2)

ABEND
Abnormal End
abgedr.
abgedruckt (AACR2)
ABI
Application Binary Interface
ABIC
adaptive bilevel image compression 
ABIOS
Advanced BIOS (Basic Input/Output System)
ABIST
Automatic Built-In Self-Test [IBM]
ABLE
Adaptive Battery Life Extender
ABM
Asynchronous Balanced Mode
ABR
area border router +
*automatic baud rate +
*Available Bit Rate

abr.

abridged

ABRS
Automated Book Request System [British Library]
ABS
Address Book Synchronization [IBM] +
*Absolute
ABT
Abort +
*advanced board technology

Abt.

Abteilung (AACR2)+
*Abtheilung (AACR2)

ABTAPL

Association of British Theological and Philosophical Libraries

ABTS
ASCII Block Terminal Services
AC
accumulator +
*alternating current +
*author's correction +
*Autocheck +
*Automatic Computer +
*Alternating Current

AC/DC

alternating current/direct current

ACA

Association of Canadian Archivists

ACAP
Application Configuration Access Protocol
ACC
Accumulator

acc.

accompaniment (AACR2)

acc. mat

accompanying material

ACCH

associated control channel

ACCMAIL
Accessing the Internet Via Email
ACD
automatic call distribution 
ACDI
Asynchronous Communications Device Interface
ACE
Access Control Encryption/Entry +
*Adobe Certified Expert +
*Advanced Computing Environment [SCO] +
*Adverse Channel Enhancements [Microcom] +
*Automatic Computing Engine

ACELP

algebraic code excited linear prediction.

ACF
Access Control Field +
*Advanced Communications Function

ACF/NCP

Advanced Communications Function/Network Control Program

ACH
Automated Clearing House

ACIA

Asynchronous Communications Interface Adapter

ACIAS
Automated Calibration Interval Analysis System

ACID

Atomicity, Consistency, Isolation, and Durability

ACIS
American Committee for Interoperable Systems +
*Andy, Charles, Ian's System
ACK
Acknowledgment

ACL

Access Control List +
*Asynchronous Connection-Less (link) +
*audio communication line

ACM
Association for Computing Machinery +
*Audio Compression Manager [Microsoft]
ACMS
Application Control Management System

ACNDC

Advanced Communication Network Development Center Inc

ACP
Ancillary Control Program +
*Auxiliary Control Process

ACPA

Association of Computer Programmer and Analysts

ACPI
Advanced Configuration and Power Interface

ACR

achromatic color removal and replacement +
*Allowed Cell Rate  +
*automatic carriage return

ACRL

Association of College and Research Libraries (ALA division)

ACROSS
Automated Cargo Release and Operations 
Service System
ACS
Access +
*Access Control Set +
*Access Control System +
*Advanced Communications Service +
*Advanced Computer System [IBM] +
*alternate channel suppression +
*Anti Curl System +
*Asynchronous Communication Server +
*autograph card signed

ACSE

Association Control Service Element

ACSI

Association Canadienne des Sciences de l'Information

ACSS
Audio Cascading Style Sheets

ACT

ACcumulator, Temporary

ACTS

Advanced Communication Technologies and Services +
*Automated Computer Time Service

ACTT
Advanced Communication and Timekeeping 
Technology [Seiko]
ACU
Automatic Calling Unit
ACVC
Ada Compiler Validation Capacity
AD
Administrative Domain
AD, A.D.
Anno Domini (in the year of our Lord)
ADA
advanced design aids +
*analog to digital to analog +
*Automatic Data Acquisitions (Programming Language 
named after Augusta Ada Lovelace)
ADAPT
Advanced Display Attribute Programming Tool
ADB
Apple Desktop Bus
ADC

Adaptive Data Compression (protocol) [Hayes] +

*Add with Carry +

*Analog to Digital Converter +

*analog-to-digital conversion +

*automatic device control

ADCCP
Advanced Data Communication Control Procedures
ADD
analog digital digital +
*Automatic Document Detection [WordPerfect]
add.
additional
ADE
Advanced Interactive Executive
ADF
Automatic Document Feeder +
*Automatically Defined Function
ADI
American Documentation Institute +
*AutoCad/AutoDesk Device Interface (driver)
ADIC

Advanced Digital Information Corporation

ADL
Address Data Latch
ADLAT
Adaptive Lattice Filter
ADLC
Adaptive Lossless Data Compression [IBM] +
*Asynchronous Data Link Control

ADM

Add Drop Multiplexer

ADMA

advanced direct memory access

ADMACS
Apple Document Management And Conrol System
ADMD
Administrative Directory Management Domain [X.500]
ADO
Active Data Objects +
*ampex digital optics
ADP
Automatic Data Processing
ADPCM
Adaptive Differential Pulse Code Modulation
ADPD

automatic display power down

adpt.
adapted
ADPVM
adaptive delta pulse code modulation
ADR
Address +
*automatic dialogue replacement

ADRM

analog/digital re-master

ADS
Application Development Solutions [AT&T] +
*Application Development System +
*Automatic Distribution System
ADSC
Address Status Changed +
*Adobe Document Structuring Conventions
ADSI
Active Directory Service Interface [Microsoft] +
*Analog Display Services Interface

ADSL

Asymmetric digital subscriber line

ADSP
AppleTalk Datastream Protocol
ADSR
Attack, Decay, Sustain, Release
ADSTAR
automatic document storage and retrieval system

ADSU

ATM DSU. Terminal adapter used to access an ATM network via an HSSI-compatible device.

ADT
Abstract Data Type +
*Application Data Types +
*asynchronous data transfer
ADU
Automatic Dialing Unit
AE
Above or Equal +
*application entity
AEB
Analog Expansion Bus [Dialogic]
AEC
Architecture, Engineering, Construction +
* automatic editing control

AED

automatic error detection

AEP

AppleTalk Echo Protocol

AES
Advanced Encryption Standard +
*Audio Engineering Society (USA)
AESA
ATM End System Address
AET
Application Entity Title
AF
Auxiliary carry Flag
AF, A.F., a.f.

audio frequency\

AFA
Accelerated File Access
AFC
Automatic Font Change +
*Automatic Frequency Control
AFD
Automatic File Distribution
afd
afdeling (AACR2)
AFDW
Active Framework for Data Warehousing [Microsoft]
AFE
Apple file exchange
AFF
audio file format
AFI
Authority and Format Identifier
AFII
Association for Font Information Interchange
AFIRM
Automated Fingerprint Image Reporting and Match
AFIS
Automated Fingerprint Identification System
afl.
aflevering (AACR2)
AFLICIO
American Federation of Labor/Congress of 
Industrial Organizations
AFP
Advanced Function Presentation [IBM] +
*Advanced Function Printing +
*Appletalk Filing Protocol [Macintosh]
AFS
Andrew File System (protocols)
AFTP
Anonymous File Transfer Protocol
AG
average gradient
AGA
Advanced Graphics Adapter
AGC
Automatic Gain Control
AGP
Accelerated/Advanced Graphics Port
AGRAS
Antiglare-Antireflective-Antistatic
AGREP
AGRicultural Research Project
AGU
Address-Generation Unit

AGV

automatically guided vehicles

AH
Authentication Header (protocol)
AHD 
 Alaska-Hawaii Daylight (Time Zone)
AHI
antihalation incoat
AHS
Alaska-Hawaii Standard (Time Zone) +
*Automated Highway Systems
AHU

antihalation incoat undercoat

AI
Analog Input +
*Artificial Intelligence
AIA
Applications Integration Architecture [DEC]
AIB

asynchronous interface board

AIC
AIXwindows Interface Composer [IBM]
AIF
Audio Interchange Format
AIIM
Association for Information and Image Management
AILA
American Indian Library Association 
AIM
AOL Instant Messenger
AIML
Artificial Intelligence Markup Language
AIMS
auto indexing mass storage
AIN
Advanced Intelligent Network [Bell Atlantic]
AIO
Asynchronous Input/output
AIP

average instructions per second

AIPLA
American Intellectual Property Law Association
AIR
Architecture Implementation Review
AIS
alarm indication signal +
*Automated Identification System [NCIC] +
*automated imaging systems +
*Automated Information Systems
AISB
Association of Imaging Service Bureaus
AISP
Association of Information Systems Professionals
AIST
Agency of Industrial Science and Technology
AIT
Advanced Intelligent Tape (drive) [Sony]
AIX
Advanced Interactive Executive [IBM]
AKA

also known as

AKM
Apogee Kick Motor (Rocket motor fired to circulate 
orbit and deploy satellite into geostationary orbit.)
AL
artificial language
ALA
American Library Association
Ala.
Alabama
ALAT
Advanced Load Address Table
ALC
Arithmetic and Logic Circuits +
*Automatic Level Control +
*automatic light compensation
ALCTS

Association for Library Collections & Technical Services (ALA division)

ALE
Address Latch Enable +
*Application Linking and Embedding
ALGOL
Algorithmic Oriented Language
ALIBI
Adaptive Location of Internetworked Bases of Information
ALINK
Active Link [HTML]
ALISE
Association of Library and Information Science Education
ALIWEB
Archie Like Indexing in the Web [Internet]
ALN
Asynchronous Learning Network
ALPAC
Automatic Language Processing Advisory Committee
ALR
Advanced Logic Research, Inc.
ALS
Automatic Light Switching
ALSC
Association for Library Service to Children (ALA division)
ALT
Alternate (mode) +
*altitude
ALT.
Alternate lifestyle [USENET Newsgroup Category]
alt.
altitude (AACR2)
ALTA
American Library Trustee Association (ALA division)
Alta.
Alberta
alu, ALU
Arithmetic Logic Unit
ALVIN
autonomous land vehicle in a neural network
AM
amplitude modulation +
*automated mapping
AMA
Automatic Message Accounting

AMADNS

AMA Data Networking System

AMANDDA
Automated Messaging and Directory Assistance
AMASS
Archival Management and Storage System

AMATPS

AMA Teleprocessing System

AMD
Active Matrix Display +
*Advanced Micro Devices Co.
Amer.
America +
*American
AMH
application message handler
AMI
access method interface +
*Alternate Mark Inversion +
*American Megatrends, Inc. +
*American Microsystems Inc.
AMMA
Advanced Memory Management Architecture 
[Everex Systems]
AMP
ampere
AMPS
Advanced Mobile Phone Service +
*automatic music program search
AMR
Audio Modem Riser
AMS
access method services
an.
annuario
AN/UYK
Army Navy/Universal digital computer
anal.
analysis +  analyzed +  Analytic
ANCOVA
Analysis of Covariance
ANDES
architecture with non-sequential dynamic 
execution schedule
ANDF
Architecture-Neutral Distribution Format
ANI
Automatic Number Identification
ANIK
The Canadian domestic satellite system that 
transmits Canadian Broadcasting Corporation's (CSC) 
network feeds throughout the country. This system 
also carries long distance voice 
and data services throughout Canada as well as some
ANN
Artificial Neural Network
ann.
Annals +  annuaire
anniv.
anniversary
annot.
annotated
anon.
anonymous
ANOVA
Analysis Of Variance

ANP

automatic numbering plan.

ANRS
automatic noise reduction system
ANS
advanced network & services
ANSI
American National Standards Institute
ANSI/SPARC
American National Standards Institute/Standards Planning 
and Requirements Committee
anthol.
anthology
anthropol.
anthropology +  anthropological
ANX
Automotive Network Exchange [Chrysler/Ford/ +
*General Motors]
AO
Analog Output
AO/DI
Always On/Dynamic ISDN
AOC
advice of charge
AOC-D
advice of charge - during call
AOCE
Apple Open Collaboration Environment
AOC-E
advice of charge - end of call
AOC-S
advice of charge - at call set-up time
AOE
activity on edge network +
*Application Operating Environment [AT&T]
AOL
America Online
AOQ
average outgoing quality
AOS
Add Or Subtract
AOV
activity on vertex
AOW
Asia and Oceania Workshop (One of the three regional OSI 
Implementors Workshops)
AP
Adjunct Processor +
*Application Processor +
*author?s proof
APA
Adaptive Packet Assembly +
*All Points Addressable +
*Arithmetic Processing Accelerator
APAR
Authorized Program Analysis Report [IBM]
APAREN
Address Parity Enable [IBM]

APaRT

Automated Packet Recognition/Translation

APC

adjacent point code

APCUG
Association of PC User Groups
APD
auto power down
APDU
Application Protocol Data Units
API
Application Program Interface
APIC
Advanced Programmable Interrupt Controller 
(bus) [Intel]
APIS
Advanced Passenger Information System
APL
A Programming Language (Mathematics)
APLD
automatic program locate device
APM
Advanced Power Management [IBM]
APNIC
Asia-Pacific Network Information Center [Internet]
APNSS
analog private network signaling system
APOP
Authenticated Post Office Protocol
app.
appendix +
*application
APPC
Advanced Program-to-Program Communications [IBM]
APPI
Advanced Peer-to-Peer Internetworking
APPLETS
Applications software
APPN
Advanced Peer-to-Peer Networking [IBM]

APPN+

Next-generation APPN

approx.
approximately (AACR2)
APPS
Applications
APR
Address Resolution Protocol +
*automatic picture replacement
Apr.
April
APRP
Adaptive Pattern Recognition Processing
APS
Advanced Photo System +
*Advanced Printing Service [IBM] +
*Asynchronous Protocol Specification +
*automatic protection switching
APSE
ADA Programming Support Environment
APSS
automatic program search system
APT
Address Pass Through +
*Advanced Parallel Technology +  
*automatic picture transmission +
*Automatic Programmed Tools

AQL

acceptable quality level

AR

Arkansas +  automatic reverse

ARA
AppleTalk Remote Access
ARAG
Antireflective-Antiglare
ARAS
Antireflective-Antistatic
ARCA
Advanced RISC Computing Architecture
Archie

A system which provides lists of anonymous

FTP archives.

ARCnet
Attached Resource Computer Network
ARDIS
Advanced National Radio Data Service
arg.
argang (AACR2) +  argraffiad (AACR2) +
*argument

ARIN

American Registry for Internet Numbers

Ariz.
Arizona
Ark.
Arkansas
ARL
Adjusted Ring Length +
*Association of Research Libraries
ARLL
Advanced Run Length Limited
ARM
Advanced RISC Machine (processor) +
*Annotated Reference Manual +
*Asynchronous Response Mode
ARMA
Association of Records Managers and Administrators
AROM
alterable read only memory
ARP
Address Resolution Protocol [Novell]
ARP
Address Resolution Protocol
ARPA
Advanced Research Projects Agency
ARPANET
Advanced Research Projects Agency Network
ARPL
Adjust Requested Privilege Level
ARQ
Automatic ReQuest
ARQ
Automatic Repeat Request
arr.
arranged (AACR2) +
*arranger (AACR2)
ARRIP
Australian Rural Reserach in Progress
ART

Automatic Recognition Technology 

art.
article
ARTA
Apple Real Time Architecture
ARTIC
A Real-Time Interface Coprocessor [IBM]
ARTS
Asynchronous Remote Takeover Server
ARTT
Asynchronous Remote Takeover Terminal
ARU
alarm relay unit +
*Audio Response Unit
ARVIS
alternate reality vision system
AS
Autonomous System [Internet]
AS/400
Application System/400 [IBM]
AS/U
Advanced Server for Unix
AS3AP
ANSI SQL Standard Scalable and Portable
ASA
Acoustical Society of America +
*American Standards Association (Replaced by ANSI)
ASAI
Adjunct Switch Application Interface [AT&T]

ASAM

ATM subscriber access multiplexer

ASAP
As Soon As Possible +
*Automatic Switching And Processing
ASB
Advanced System Buffering [Intel]

ASBR

autonomous system boundary router

ASCAP
Arnerican Society of Composers, Authors and Publishers
ASCC
Automatic Sequence Controlled Calculator [IBM] *
ASCII
American Standard Code for Information Interchange
ASCLA
Library Associations Association of Specialized 
and Cooperative (ALA division)

ASCU

agent-set control unit

ASD
Adult Service Division +
* Automatic Skip Driver [Microsoft]
ASF
Active/Advanced Streaming Format [Microsoft]  +
*assignable square feet
ASI
American Society of Indexers +
*Applied Systems Institute +
*ATM Service Interface +
*automated system initialization
ASIC
Application-Specific Integrated Circuit
ASIS
American Society for Information Science
ASIT
Advanced Security and Identification Technology
ASL
Adaptive Speed Levelling +
*automatic stereo level
ASLM
Apple Shared Library Manager [Macintosh]
ASM
assembler
ASME
American Society for Manufacturing Mechanical Engineers
ASMP
Asymmetric Multprocessing
ASN
Abstract Syntax Notation +
*Autonomous System Number +
*auxiliary signal network
ASN.1
Abstract Syntax Notation One
ASO
Automated Systems Operations
ASP
Active Server Page [Microsoft] +
*AppleTalk Session Protocol +
*Application/Authorized Service Provider +
*Association of Shareware Professionals
ASPI
Advanced SCSI Programming Interface [Adaptec]
ASPS
Advanced Signal Processing System
ASR
Address Space Register +
*Automatic Send-Receive +
*automatic send-receive set +
*Automatic Speech Recognition
assn.
association
assoc.
associated +
*associate
asst.
assistant
AST
accurate screen technology +
*AST Research, Inc. (named from first initials of 
the founders: Albert Wong, Safi Qureshey, Thomas Yuen) +
*Atlantic Standard Time (Time Zone) +
*automatic scan tracking +
*automatic spanning tree
ASTA
Advanced Software Technology and Algorithms
ASYNC
Asynchronous
AT
absolute time +
*Advanced Technology +
*ATtention (Hayes Command Set) +
*Azores Time (Time Zone)
AT&T
American Telephone and Telegraph
ATA
Advanced Technology Attachment
ATAPI
Advanced Technology Attachment Packet Interface
ATC
authorized training centre +
*automatic tuning control
ATCC
American type culture collection
ATCP
AppleTalk Control Protocol

ATDM

asynchronous time-division multiplexing

atdolg.
atdolgozott (AACR2)
ATDP
Attention Dial Pulse
ATDT

Attention Dial Tone +
*ATtention Dial using DTMF Touch-tone Dialing

ATE
Automated Test Equipment
ATG
address translation gateway +
*Advanced Technology Group
ATH
Attention Hang-Up (Modem command)
ATIS
advanced traveler information systems
ATL
Active Template Library
ATLAS
Abbreviated Test Language For All Systems
ATM
Adobe Typeface Manager +
*Air Traffic Management +
*Asynchronous Transfer Mode +
*Automated Teller Machine
atm
atmosphere
ATM NIC
ATM network interface card

ATMM

ATM management

ATMS
advanced traffic management systems
ATOLL
Acceptance Test Or Launch Language

ATP

AppleTalk Transaction Protocol

ATPS
AppleTalk Printing Services [Macintosh]
ATR
Advanced Telecommunications Research Laboratory +
*audiotape recorder +
*Automatic Terminal Recognition
ATRC
Advanced Television Research Consortium 
(Philips, Thomson, NBC)
ATS

Administrative Terminal System +
*Apple Terminal Services +
*Automated Troubleshooting System

ATTN
Attention
ATTRIB
Attribute (also ATR)
ATTS
automatic tape timer selector
ATX
Advanced Technology Extended [Intel]
ATZ
Attention Restore configuration profile from 
nonvolatile RAM (Modem command)
AU
access unit +
*administrative unit +
*Arithmatic Unit
Audg
Ausgabe
AUDIT
Automated Data Input Terminal
Aufl
Auflage (AACR2)
Aug.
August
aug.
augmented (AACR2)
augm.
augmente, -e (AACR2)
AUI
Attachment/Autonomous Unit Interface +
*autonomous unit interface
aum
aumentada (AACR2) +  aumentato (AACR2)
AUP
Acceptable Use Policy [Internet]

AURP

Apple Talk Udate-Based Routing Protocol

Aus.
Australia +  Australian
Ausg.
Ausgabe (AACR2)

AUSM

ATM user service module.

Austr.

Austria +  Austrian

auth.
author
AUTO
Automatic
autobiog.

autobiography +  autobiographical

AUTOCAT
Automatic Category Epoch Creation
AUTOEXEC
Automatic Execution
Autoexec.bat
AUTOmatically EXECuted BATch
AUX
Auxiliary (First Serial Port)
AV
Audio/Video +
*Audiovisual +
*Authenticity Verification +
*AVailable
A-V
audio-visual
AVA
Audio Visual Authoring Language [IBM] +
*International Audio Visual Software Fair 
Organizing Association
avail.
available
AVC
Audio Visual Connection [IBM] +
*automatic volume control
AVCS
advanced vehicle control system
AVD
Alternating Voice and Data
avd.
avdeling (AACR2)
AVG
Average
AVI
Audio Visual Interleave [Microsoft]  +
*automated vehicle identification
AVK
audio visual kernel
AVL
automatic vehicle location

AVM

ATM voice multiplexer.

AVP
Attribute-Value Pair
AVR
Automatic Voice Recognition
AVSS

audio-video support system

AVT
address vector table  +
*Applied Voice Technology

AW

administrative weight

AWE
Advanced Wave Effects [Creative Lab]
AWG
American Wire Gage
AWK
(Unix language named after its authors +
*Al Aho, Peter Weinberger and Brian Kernighan)
AWS
Advanced Workstations and Systems (group) [IBM]
AWT
Abstract Window Toolkit [Java]
AX
Architecture Extended +
*Automatic Transmission
AZ

Arizona 

AZ/EL Mount

Antenna mount that requires two separate

adjustments to move from one satellite to another;