Technology terms starting with E

895 terms

existing quality television Synonym [in ITU-T usage] distribution-quality television.
EXIT External Interface and Test.
Exit Criteria Program specific accomplishments that must be satisfactorily demonstrated before an effort or program can progress further in the current acquisition…
exit status See "status".
EXL Excimer Laser.
Exo Decoy A decoy that matches RV signature exoatmospherically . Exo decoys can use radar and/or optical means to deceive sensors.
Exoatmospheric Outside the Earths atmosphere; generally considered to be altitudes above 100 km.
Exoatmospheric Reentry Vehicle Interceptor Subsystem (ERIS) OBSOLETE. Interceptor designed to provide functional test validation of GBI.
Exoatmospheric Test Bed (XTB) Flight qualified and range integrated vehicle to support other programs such as GBI-X.
exokernel A minimal piece of privileged code, similar to a microkernel but providing a more 'hardware-like' interface to the tasks it manages.
Exolab Core http://www.exolab.org/
Expandable Banner A banner ad that can expand to as large as 468 x 240 pixels after a user clicks on it or after a user moves the cursor over the banner.
expander A device that restores the dynamic range of a compressed signal to its original dynamic range.
Expansion The increase in volume of a soil mass.
expansion adapter The hardware used to extend a computer's control over a peripheral device. The expansion adapter includes the expansion card, expansion slot, and…
expansion capability The inherent limit for increasing the capacity of a system beyond its installed capacity.
expansion card A printed circuit board that plugs into an expansion slot and extends a computer's control over a peripheral device.
expansion slot The slots on the system board in which you insert expansion cards.
Expected Measured Loss (EML) The term "Expected Measured Loss" denotes a calculated loss which specifies the end-to-end 1004-Hz loss on a terminated test connection between two…
expedited data unit In layered systems, a service data unit that is delivered to a peer entity in the destination open system before the delivery of any subsequent service…
experimental station A station utilizing radio waves in experiments with a view to the development of science or technique. This definition does not include amateur stations.
Expert Document Quality page which links to many non-affiliated topical resources. See also: Hilltop: A Search Engine based on Expert Documents
expert system An artificial intelligence application that uses a knowledge base of human expertise to aid in solving problems Note: The problem-solving capability is…
expert system (ES) A computer system that facilitates solving problems in a given field or application by drawing inference from a knowledge base developed from human…
Expert Systems Software programs, which use artificial intelligence techniques to capture and apply the non-algorithmic knowledge and procedures of human experts.
Expired Appropriation An appropriation that is no longer available for new obligation but is still available for disbursement to liquidate existing obligations.
Explain text Text that provides customers with information about the behavior of a Group Policy setting.
EXPLAN Exercise Plan.
explicit congestion message A message generated by the network and sent to the user terminal to indicate a congestion condition. [T1.615-1992]
Explicit Coordination A battle management technique which communicates results, decisions or command from one battle manager to another, usually from a higher command to a…
explicit deny An explicit deny results from a statement that has effect=deny, assuming that any stated conditions are met. Example: Deny all requests from Antarctica.
explicit launch permission An Amazon Machine Image launch permission granted to a specific AWS account.
explicit services Services that can be accessed from an application program, via an API, and are generally provided only when requested [POSIX.0].
exploder Synonym mail exploder.
Exploit Code A program that allows attackers to automatically break into a system.
exploitable channel 1. [A] Channel that allows the violation of the security policy governing an information system (IS) and is usable or detectable by subjects external to…
exponential backoff A strategy that incrementally increases the wait between retry attempts in order to reduce the load on the system and increase the likelihood that…
export Data extracted or taken out of one environment or application usually in a prescribed format, and usually for import into another environment or…
exposed facilities Any outside plant facilities subject to the effects of lightning; or to power contacts, power induction, or differences in ground potential any of which…
exposure Contact of an organism with a chemical, radiological, or physical agent.
express orderwire A permanently connected voice circuit between selected stations for technical control purposes.
expression A combination of operands and operators that produces a resulting value. Expressions have a resulting type, that affects the context in which they may be…
expunge material To completely remove documentary material from NARA's physical custody and all related information about the material such as that no trace of the…
extend The process of applying Windows SharePoint Services to a virtual server.
extended accelerator key Additional accelerator keys, used for bookmarks, action buttons, and window tabs. To view the extended accelerator keys, press and hold down the ALT key.
extended ACL An optional directory access control feature available for an IBM® Lotus® Domino™ Directory and Extended Directory Catalog used to apply restrictions…
extended area service (EAS) A network-provided service feature in which a user pays a higher flat rate to obtain wider geographical coverage without paying per-call charges for calls…
extended binary coded decimal interchange code See EBCDIC.
extended block mode (MODE E) MODE E is a critical GridFTP components because it allows for out of order reception of data.
extended character set Extended character sets support languages which require 8-bit characters or double-byte characters, such as Chinese and French.
Extended Directory Catalog A directory catalog used by servers which, to facilitate quick name lookups, retains the individual documents and the multiple, sorted views available in…
extended distance cluster A cluster with alternate nodes located in different data centers separated by some distance. Formerly known as campus cluster.
extended partition A type of partition that you can create only on basic master boot record (MBR) disks.
extended permission A permission that is specific to an object added to the standard Active Directory object schema by Exchange. [Exchange 2003]
Extended Planning Annex A document providing program guidance for an additional 10 years beyond the POM. 103
extended rights Rights added by Exchange to Active Directory for controlling access to Exchange objects. [Exchange 2003]
extended superframe (ESF) In T-carrier, a synchronization frame that delineates 24 DS1 frames Note: ESF requires less frequent synchronization than the T-carrier D-4 superframe…
extended-definition television (EDTV) Television in which (a) improvements are made to the standard National Television System Committee (NTSC) television system, (b) the improvements are…
extends Class X extends class Y to add functionality, either by adding fields or methods to class Y, or by overriding methods of class Y.
extensibility A property of a system, format, or standard that allows changes in performance or format within a common framework, while retaining partial or complete…
Extensible Firmware Interface A type of interface between a computer, firmware, hardware, and the operating system. EFI defines a new partition style called GUID partition table (GPT).
Extensible Markup Language See XML.
Extensible Storage Engine (ESE) The Active Directory database engine. ESE (Esent.dll) is an improved version of the Jet database that is used in Microsoft Exchange Server versions 4.
extension The short single-stranded stretch of nucleotides remaining on a double-stranded DNA molecule, following treatment with a restriction endonuclease which…
extension bell In telephony, a user end device, separate from a subscriber telephone, which device produces an audible signal indicating that there is an incoming call…
extension bit The first bit of each octet of the address field of a packet. The first octet is identified by the extension bit set to 0, and the second octet is…
extension facility A facility that provides access to communications for a user or group of users isolated from a central communications node.
extension terminal A terminal that is added to an existing terminal and that uses the same circuit and address, i.e., port and number, as the terminal to which it is added.
External Cloud A cloud computing environment that is external to the boundaries of the organization.
external data source A data source for federation that is not crawled, parsed, or indexed by WebSphere Information Integrator OmniFind Edition.
external entity An entity that exists as an external XML file, which is included in the XML document using an entity reference.
external environment A set of external entities to the application platform with which information is exchanged.
external environment interface (EEI) The interface between the application platform and the external environment across which information is exchanged.
external file INFO stores data in files within a database. However, database information can be stored in files outside of the database.
external key A file that contains information to access cryptographically locked data, which is stored away from the system, such as on a USB flash drive.
external key file A file that contains the external key and is stored on an external media device.
External Link Link which references another domain. Some people believe in link hoarding, but linking out to other related resources is a good way to help search…
external polygon See universe polygon.
external subset That part of a DTD that is defined by references to external DTD files.
external timing reference In a given communications system, a timing reference obtained from a source, such as a navigation system, external to the given system.
external viewer A plug-in, add-on, or helper application used with a Web browser to present graphics, audio, or video files.
extinction coefficient The sum of the absorption coefficient and the scattering coefficient. [From Weik '89]
extinction ratio (re) The ratio of two optical power levels, of a digital signal generated by an optical source, e.g.
extra bit Synonym added bit.
extra block Synonym added block.
extra sector In information assurance, a sector that is written on a diskette track in excess of the standard number of sectors, as part of a method of copy protection.
extra track In information assurance, a track that is written on a diskette in excess of the standard number of tracks, as part of a method of copy protection.
Extraction The process of converting a captured biometric sample into biometric data so that it can be compared to a reference.
extraction resistance [The] capability of crypto-equipment or secure telecommunications equipment to resist efforts to extract [the] key. [INFOSEC-99]
extranet An Internet based access method to a corporate intranet site by limited or total access through a security firewall.
extremely high frequency (EHF) Frequencies from 30 GHz to 300 GHz. See electromagnetic spectrum.
Extremely Low Frequency (ELF) Refers to a band of frequencies from 30 to 300 Hz.
extrinsic joint loss For an optical fiber, that portion of a joint loss that is not intrinsic to the fibers, e.g.
eye pattern An oscilloscope display in which a pseudorandom digital data signal from a receiver is repetitively sampled and applied to the vertical input, while the…
eyes only A message marker for a special-category message that is intended for delivery only to a specific person, or authorized representative of that person, and…