SD

  1. (initialism) .  School district.
  2. (initialism) .  (law enforcement) Sheriff's department.
  3. (initialism) .  (medical) Shacklesons Disease, a rare brain disease.
  4. (initialism) .  (mathematics) Standard deviation, a mathematical measure of the spread of a list of numbers.
  5. (initialism) .  (television) standard definition, SDTV.
  6. (initialism) .  Secure Digital, a non-volatile memory card format developed by Matsushita, SanDisk, and Toshiba for use in portable devices.
  7. Noun.  (alternative capitalization of, SD) , standard deviation.

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This entry was last updated on RefTopia from its source on 3/20/2012.