Dictionary.com

SD

1
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abbreviation

the intelligence and counterespionage service of the Nazi SS.

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Question 1 of 7
Let’s start with some etymology: What are the origins of the typographical word “bracket”?

Origin of SD

1
From the German word Sicherheitsdienst

Definition for SD (2 of 7)

SD2

abbreviation

sea-damaged.
South Dakota (approved especially for use with zip code).
Statistics. standard deviation.

Definition for SD (3 of 7)

sd.

abbreviation

sound.

Definition for SD (4 of 7)

s.d.

abbreviation

sine die.
Statistics. standard deviation.

Definition for SD (5 of 7)

S/D

abbreviation

school district.
sight draft.

Definition for SD (6 of 7)

S.D.1

abbreviation

doctor of science.

Origin of S.D.

1
From Latin Scientiae Doctor

Definition for SD (7 of 7)

S.D.2

abbreviation

sea-damaged.
senior deacon.
South Dakota.
special delivery.
Statistics. standard deviation.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for SD

British Dictionary definitions for SD (1 of 3)

sd1

abbreviation for

sine die
sound
philosophy sense datum

British Dictionary definitions for SD (2 of 3)

sd2

the internet domain name for

Sudan

British Dictionary definitions for SD (3 of 3)

SD

abbreviation for

South Dakota
Also: sd statistics standard deviation

abbreviation for

Swaziland (international car registration)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for SD

SD

abbr.

streptodornase
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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