title: TSD
text: # TSD
  
  TSD may refer to:
  
  ## Businesses and organizations
  
  * TSD Desalination, an Israeli start-up
  * Telluride School District R-1
  * Texas School for the Deaf, U.S.
  * Transylvanian Society of Dracula
  * Turin School of Development, Italy
  * University of Wales Trinity Saint David, a university in the U.K.
  
  ## Government
  
  * Technical Services Division, another term for the U.S. CIA's Office of Technical Service
  * Treatment, Storage, and Disposal Facility; see HAZWOPER
  * Treasury Solicitor's Department, U.K.
  * Trilateral Security Dialogue, part of the Quadrilateral Security Dialogue
  * Technical Support Division ad hoc Indian Army Intelligence Unit.
  
  ## Science and medicine
  
  * Target-to-skin distance, a measurement in external beam radiotherapy
  * Tay–Sachs disease, a genetic disorder, fatal in its most common variant
  * Temperature-dependent sex determination
  * Thermionic specific detector, another term for nitrogen–phosphorus detector
  * Total sleep deprivation, a parameter in sleep and memory studies
  
  ## Other uses
  
  * TSD (band), a 1990s girl band
  * TSD rally (time-speed-distance), a type of motorsport rally
  * ISO 639:tsd or Tsakonian, a modern Hellenic language which is highly divergent from other spoken varieties of Modern Greek
  * .TSD file extension, for the graphics editor Tile Studio
  * Tang Soo Do, a Korean martial art
  * Text, Speech and Dialogue, an international conference held in the Czech Republic
  * Toshiba Telecommunication Systems Division, Irvine, California
  * Turtle saving device, another term for turtle excluder device
  