| August Ferdinand Möbius | Automated testing | Autoimmune diseases |
| Audible ringing toneAudible ringing tone In telephony, a signal, usually consisting of an audio tone interrupted at a slow repetition rate, provided to a caller to indicate that the called-party instrument is being sent a ringing signal. Note: The audible ringing tone may be | Audio response unitIn telecommunication, an audio response unit (ARU) is a device that provides synthesized voice responses to dual-tone multifrequency signaling input by processing calls based on (a) the call-originator input, (b) information received from a host data base | Audit (telecommunication)In telecommunication, the term audit has the following meanings: 1. To conduct an independent review and examination of system records and activities in order to test the adequacy and effectiveness of data security and data integrity procedures, to ensure |
| Audit trailAn audit trail is a record of transactions or communications all related to a single person, account or other entity. Webopedia callis it: :"A record showing who has accessed a computer system and what operations he or she has performed during a given per | AuroraAurora is the Latin word for " dawn". It can refer to: The Roman equivalent of the Greek goddess of the dawn, Eos. A polar light (caused by solar wind and seen near the poles). See polar aurora . The collective noun for a group of polar bears. Several air | AuthenticatorIn telecommunication, the term authenticator has the following meanings: 1. A symbol or group of symbols, or a series of bits, selected or derived in a prearranged manner and usually inserted at a predetermined point within a message or transmission for t |
| Automated information systemIn telecommunication, the term automated information system (AIS) has the following meanings: 1. An assembly of computer hardware, software, firmware, or any combination of these, configured to accomplish specific information-handling operations, such as | Automated information systems securityIn telecommunication, the term automated information systems security has the following meanings: 1. Measures and controls that ensure confidentiality, integrity, and availability of the information processed and stored by automated information systems. | Automatic callbackIn telecommunication, an automatic callback is a service feature that permits a user, when encountering a busy condition, to instruct the system to retain the called and calling numbers and to establish the call when there is an available line. Note 1: Au |
| Automatic call distributor | Automatic calling | Automatic data processing |
| Automatic data processing equipment | Automatic link establishment | Automatic message exchange |
| Automatic redial | Automatic sounding | Automatic switching system |
| Auxiliary power | Augusto Boal | Autolysin |
| Aurelian | Autonomous system | Autarky |
| Aurobindo | Augusta | Augusta, Maine |
| Australia Day | Automatic teller machine | August Weismann |
| Audio timescale-pitch modification | Augur | Authentication |
| Autonomous robot | Autogynephilia | August Strindberg |
| Aurora aircraft | Auster | Australia Group |
| Australian fauna | Australian flora | Autocracy |
| Augustus Pitt Rivers | Automatism | AutoLISP |
| Auxiliary verb | Audrey Hepburn | Autosport |
| Autosegmental phonology | Australian constitutional crisis of 1975 | Augustus John |
| Auk | Australian and New Zealand Army Corps | Austrian euro coins |
| Audio codec | Autonomous communities of Spain | Autobahn |
| Aura | Auburn | Austronesian languages |
| Augmented Backus-Naur form | Automatic baud rate detection | Authentic Thaumaturgy |
| Auxiliary power unit | Australopithecine | Australian House of Representatives |
| Australian cuisine | Autogyro | Austrasia |
| Australian Kelpie | Auction | Australian Mist |
| Aulë | Australian republicanism | Auction bridge |
| August Bournonville | Australian Aborigine | Audio editing |
| Au Sable River (Michigan) | August Hlond | August Wilhelm Zumpt |
| Autauga County, Alabama | Austro-Hungarian North Pole Expedition | Aulus Gellius |
| Autonous | Augeas | Ausonius |
| Auxo | Australian dollar | Autofocus camera |
| Auge | Aulis | Autonoe |
| Autolycus | Aube | Aude |
| Automedon | Auson | Aubusson |
| Augmented reality | Aufaniae | Autograph |
