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Extended Graphics Array
Extended Graphics Array, or XGA, is an IBM graphics standard introduced in 1990 for the PS/2, combining VGA compatibility with 1024 × 768 resolution and 256 colors.
Extended Industry Standard Architecture
Extended Industry Standard Architecture (EISA) is a 32-bit PC expansion bus announced in 1988 by nine computer makers as an open alternative to IBM's Micro Channel Architecture.
Extended information filter
The extended information filter (EIF) is a Gaussian state-estimation algorithm, the information-form dual of the extended Kalman filter, whose sparse representation made scalable SLAM possible.
Extended Jacobian method
The extended Jacobian method is a technique for resolving kinematic redundancy of robot manipulators, proposed by John Baillieul, that adds secondary-task constraints so the velocity mapping becomes square and invertible.
Extended Range Attack Munition
The Extended Range Attack Munition (ERAM) is a low-cost, precision-guided, air-launched cruise missile developed by the United States Air Force for Ukraine's fighters, first live-tested in 2026.
Extended Validation Certificate
An Extended Validation (EV) certificate is an X.509 TLS server certificate issued under the CA/Browser Forum's EV Guidelines, which require verification of the controlling organization's legal identity.
Extended-range electric vehicle
An extended-range electric vehicle (EREV) is a plug-in vehicle whose wheels are driven only by an electric motor, with an onboard engine acting solely as a generator.
Extended-reach drilling
Extended-reach drilling (ERD) drills oil and gas wells whose horizontal reach is at least twice their vertical depth, coined by Mobil Oil in the early 1980s.
ExteNet Systems
ExteNet Systems, formerly ClearLinx Network Corporation, is a telecommunications infrastructure company in Lisle, Illinois, founded in 2002, that builds distributed antenna systems and small-cell networks.
Extensible Authentication Protocol
The Extensible Authentication Protocol (EAP) is an authentication framework defined in RFC 3748 that negotiates multiple authentication methods over links such as PPP or IEEE 802.
Extensible Metadata Platform
The Extensible Metadata Platform (XMP) is an Adobe standard for embedding metadata such as titles, keywords, and copyright information into files like JPEG and PDF, introduced in 2001.
Extension principle
The extension principle is a rule in fuzzy set theory, introduced by Lotfi Zadeh, that extends ordinary functions and relations to fuzzy sets and underlies fuzzy arithmetic.
Extension spring
An extension spring, also called a tension spring, is a close-wound helical spring that stores energy when stretched, with hooks or loops at its ends for attaching parts.
Extensometer
An extensometer is an instrument that measures the change in distance between two points, from laboratory strain testing to borehole monitoring of ground movement around tunnels.
Exterior Gateway Protocol
The Exterior Gateway Protocol (EGP) is a routing protocol, specified in RFC 827 in 1982, that exchanged reachability information between autonomous systems before being replaced by BGP.
Exterior insulation and finish system
Exterior insulation and finish system (EIFS), known in Europe as external thermal insulation composite system, is a multi-layered wall cladding combining continuous insulation with a durable, decorative finish.
Exterior insulation and finishing system
The exterior insulation and finishing system (EIFS), also called synthetic stucco, is a wall cladding combining insulation board, reinforced base coat, and textured finish, developed in Europe after World War II.
External Data Representation
External Data Representation (XDR) is a standard for describing and serializing data for network transmission, defined by Sun Microsystems in RFC 1014 in 1987 and now specified by RFC 4506.
External sorting
External sorting, also called external sort, sorts data too large for main memory by moving blocks between memory and storage, typically via external merge sort.
External-cavity diode laser
An external-cavity diode laser (ECDL) is a tunable semiconductor laser whose external feedback element, usually a diffraction grating, narrows the linewidth and enables broad tuning.
Extra 300
The Extra 300 is a German two-seat aerobatic monoplane designed by competition pilot Walter Extra, first flown in 1988 and powered by a 300 hp Lycoming engine.
Extract, load, transform
Extract, load, transform (ELT) is a data integration pattern that loads raw data into a cloud warehouse or lake before transforming it there, reversing ETL's order; typically uses SQL tools such as dbt.
Extract, transform, load
Extract, transform, load (ETL) is a data integration process, popular since the 1970s, that extracts data from multiple sources, transforms it, and loads it into a data warehouse.
Extraction of petroleum
Extraction of petroleum is the set of industrial operations that bring crude oil from a subsurface reservoir to the surface, from drilling through primary, secondary, and enhanced recovery.
Extractive Industries Transparency Initiative
The Extractive Industries Transparency Initiative (EITI), established in 2003, is a global standard for transparency in the oil, gas, and mining sectors, with more than 50 implementing countries.
Extradosed bridge
An extradosed bridge is a concrete bridge whose stay cables pass over low pylons above the deck, combining a stiff prestressed box girder with a modest amount of cable support.
Extradosed bridges of Asia
Extradosed bridges of Asia covers the prestressed concrete girder bridges whose tendons pass over short masts, first built in Japan in 1994 and later adopted across China, India, and Thailand.
Extranet
An extranet is a private computer network an organization uses to share selected information and applications with authorized external parties, such as business partners, suppliers, and customers.
Extrap T2R
Extrap T2R is a medium-sized reversed-field pinch magnetic confinement fusion experiment at KTH Royal Institute of Technology in Stockholm, operating since 1994 as a European test bed for resistive wall mode feedback control.
ExtraTorrent
ExtraTorrent was a BitTorrent index site for music, films, software, and games, founded in 2006 and run by the anonymous administrator SaM until its permanent shutdown in May 2017.