SDI may refer to:

Arts and entertainment

* ''SDI'' (arcade game), 1987, by Sega * ''S.D.I.'' (video game), 1986, by Cinemaware

Companies and organizations

* Samsung SDI, battery manufacturer * Scottish Development International * Scuba Diving International *

SDI Media Group SDI Media Group, Inc. is a major provider of subtitling, translation, and language dubbing services to the entertainment industry. The headquarters are located in the Westchester district of Los Angeles, California with other offices and facil ...

, providing subtitling and language services *

SDI Presence SDI Presence LLC (commonly referred to as SDI) is an IT consultancy and managed services provider (MSP) that provides technology-based professional services. As of 2022, the firm has over 300 employees. SDI is a certified Minority Business E ...

, US IT consultancy * SDI Technologies, a consumer electronics manufacturer, New Jersey, U.S.A. *

Service Desk Institute The Service Desk Institute (SDI), founded in 1988, is a worldwide professional organisation for those working in the IT service and support industry. SDI delivers information to help improve the knowledge of help desk professionals through IT sup ...

, for computer help desk staff * Slum Dwellers International * (Italian Democratic Socialists), a political party *

Software Design Inc. A grasp generally refers to an act of taking, holding or seizing firmly with (or as if with) the hand. Grasp or GRASP may also refer to: Software: * Graphics Animation System for Professionals, the first multimedia animation program for the IBM ...

Spiritual Directors International Spiritual Directors International (SDI) is an educational nonprofit organization that supports professional spiritual direction and spiritual companionship. History Spiritual Directors International (SDI) was formed in 1990 to support the work ...

, supporting spiritual direction *

Steel Dynamics, Inc. Steel Dynamics, Inc., sometimes abbreviated as "SDI", is an American steel producer based in Fort Wayne, Indiana. With a production capacity of 13 million tons of steel, the company is the third largest producer of carbon steel products in the U ...

, a steel producer, Indiana, US.A.

In science and technology

Computing and telecommunications

* Serial data input in the Serial Peripheral Interface bus * Serial digital interface for sending video signals over coaxial cable * Single document interface, a style of graphical user interface *

Software-defined infrastructure Software-defined infrastructure (SDI) is the definition of technical computing infrastructure entirely under the control of software with no operator or human intervention. It operates independent of any hardware-specific dependencies and is progr ...

, with no human intervention * Spatial data infrastructure *

Standard Disk Interconnect The Standard Disk Interconnect (SDI, sometimes Standard Disk Interface) was used by Digital Equipment Corporation for its line of RAxx disks, for example the RA90. There were two bi-directional serial communications paths between the controller and ...

, a DEC standard * Statistical Design Institute's SDI Tools for Microsoft Excel *

System Deployment Image A System Deployment Image (aka SDI) is a file format used primarily with Microsoft products to contain an arbitrary disk image, including boot sector information. Description The System Deployment Image (SDI) file format is often used to allow ...

, a Microsoft disk image file format

Medicine

* Sulfadimidine, an antibiotic

Other uses in science and technology

* Selective dissemination of information *

Silt density index The silt density index is a measure for the fouling capacity of water in reverse osmosis systems. The test measures the rate at which a 0.45-micrometre The micrometre ( international spelling as used by the International Bureau of Weights ...

in reverse osmosis systems * Smoke-developed index, the concentration of smoke emitted by a material * Spiral Dynamics Integral, a model of evolutionary development *

Stand density index Stand density index (SDI; also known as Reineke's Stand Density Index after its founder) is a measure of the stocking of a stand of trees based on the number of trees per unit area and diameter at breast height (DBH) of the tree of average basal are ...

, of the stocking of a stand of trees * Subsurface drip irrigation *

Suction Diesel Injection The SDI engine is a design of naturally aspirated (NA) direct injection diesel engine developed and produced by Volkswagen Group for use in cars and vans, along with marine engine (Volkswagen Marine) and Volkswagen Industrial Motor applications. ...

, a Volkswagen diesel engine

Other uses

* Saidor Airport (IATA code), in Madang Province, Papua New Guinea * Socio Demographic Index of the Global Burden of Disease Study * State Disability Insurance of California, US *

Strategic Defense Initiative The Strategic Defense Initiative (SDI), derisively nicknamed the "''Star Wars'' program", was a proposed missile defense system intended to protect the United States from attack by ballistic strategic nuclear weapons (intercontinental ballistic ...

, US anti-missile project {{disambiguation