title: SDI
text: # SDI
  
  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, providing subtitling and language services
  * SDI Presence, US IT consultancy
  * SDI Technologies, a consumer electronics manufacturer, New Jersey, U.S.A.
  * Service Desk Institute, for computer help desk staff
  * Slum Dwellers International
  * Socialisti Democratici Italiani (Italian Democratic Socialists), a political party
  * Software Design Inc.
  * Spiritual Directors International, supporting spiritual direction
  * Steel Dynamics, Inc., 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, with no human intervention
  * Spatial data infrastructure
  * Standard Disk Interconnect, a DEC standard
  * Statistical Design Institute's SDI Tools for Microsoft Excel
  * System Deployment Image, a Microsoft disk image file format
  
  ### Medicine
  
  * Sulfadimidine, an antibiotic
  
  ### Other uses in science and technology
  
  * Selective dissemination of information
  * Silt density index 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, of the stocking of a stand of trees
  * Subsurface drip irrigation
  * Suction Diesel Injection, 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, US anti-missile project
  