SD

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See also: s.d., S.D., and .sd

Translingual[edit]

Symbol[edit]

SD

  1. The ISO 3166-1 two-letter (alpha-2) code for Sudan.

English[edit]

Initialism[edit]

SD

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

Derived terms[edit]

Anagrams[edit]


Spanish[edit]

Initialism[edit]

SD

  1. (grammar, syntax) Abbreviation of sintagma determinante.