SD

¹ American  

abbreviation

1. the intelligence and counterespionage service of the Nazi SS.

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S.D. ² American  

abbreviation

1. doctor of science.

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SD ³ American  

abbreviation

1. sea-damaged.

2. South Dakota (approved especially for use with zip code).

3. Statistics. standard deviation.

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S.D. ⁴ American  

abbreviation

1. sea-damaged.

2. senior deacon.

3. South Dakota.

4. special delivery.

5. Statistics. standard deviation.

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sd. ⁵ American  

abbreviation

1. sound.

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S/D ⁶ American  

abbreviation

1. school district.

2. sight draft.

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s.d. ⁷ American  

abbreviation

1. sine die.

2. Statistics. standard deviation.

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SD ¹ British  

abbreviation

1. South Dakota

2. Also: sd.  statistics standard deviation

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abbreviation

1. Swaziland (international car registration)

sd ² British  

abbreviation

1. sine die

2. sound

3. philosophy sense datum

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sd ³ British  

abbreviation

1. Sudan

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Etymology

Origin of SD¹

From the German word Sicherheitsdienst

Origin of S.D.²

From Latin Scientiae Doctor

Example Sentences

“Stay safe, SD. Please avoid the area & never walk or drive through floodwaters.”

From Los Angeles Times

It pegs SD Guthrie and Hap Seng Plantations as its top picks.

From The Wall Street Journal

There’s a joke on TikTok that one person in every group is the “digital camera friend,” wrangling everyone for photos and handling SD cards and adapters.

From The Wall Street Journal

Years later she learnt that USB sticks and SD cards were being smuggled into the country inside boxes of fruit.

From BBC

San Diego County also offers the free SD Emergency app, which includes the ShakeReadySD earthquake early warning tool.

From Los Angeles Times