from The American Heritage® Dictionary of the English Language, 4th Edition

  • abbr. Latin Scientiae Doctor (Doctor of Science)
  • abbr. sight draft
  • abbr. South Dakota
  • abbr. special delivery
  • abbr. standard deviation

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. South Dakota, a state of the United States of America.
  • n. The ISO 3166-1 two-letter (alpha-2) code for Sudan.
  • School district
  • Sheriff's department
  • Shacklesons Disease, a rare brain disease.
  • Standard deviation, a mathematical measure of the spread of a list of numbers.
  • standard definition, SDTV
  • Secure Digital, a non-volatile memory card format developed by Matsushita, SanDisk, and Toshiba for use in portable devices.


Sorry, no etymologies found.


  • It'll be the first game in sd i'm not at in three years. enjoy fellas, and I love how mo leggs already knows what the anthem is gonna sound like, even in SD.

    Arrowhead Pride

  • Some think the service offered by the folks in SD is great; some don't; and some think the whole discussion has turned into a tempest in a teapot.

    Page 2

  • The thing that bugs me every year in SD is a particular billboard on miramar road. every single year someone rents it and it says:

    speaking of appropriation… « Love | Peace | Ohana

  • Tesla was giving test drives of this car at the Del Coronado in SD three weeks ago.

    Missing the (electric) boat (Jack Bog's Blog)

  • Because of the next generation HD formats coming up now, DVD are sometimes referred to as SD DVD (standard definition DVD).

  • "All of our camcorders have SD Card slots and are thus called SD Camcorders."


  • Served in German SD in the Netherlands; Sentenced to death in Holland for murders of prisoners of Westerbork transit camp and Groningen prison in the Netherlands in fall 1944; sentence commuted to life imprisonment in 1948; escaped from prison to Germany on December 26, 1952.

    European Tribune

  • So if you are the GM of the Mets (a job we all want and feel we'd be outstanding at) would you call SD GM Kevin Towers and offer Jose Reyes in a deal for Peavey?

    Kranepool Society :: A New York Mets Blog

  • Please, TPM, please let me know for each ensuing SD announcment, whether the SD is a sneetch who has a star upon thars or if they are a non-star bellied sneetch.

    ABC: Obama Overtakes Hillary Among Super-Delegates

  • Of course, I; m not sure how many of then are 'Big' SDs - as opposed to 'Regular' SDs or 'Small' Sds (to use TPM's biased adjectival forms), but to paraphrase a famous poet - a SD is a SD is a SD .....

    Rep. Ike Skelton (D-MO) Endorses Clinton


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