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The saddest words

SD1

1.
the intelligence and counterespionage service of the Nazi SS.
Origin of SD1
From the German word Sicherheitsdienst

SD2

1.
sea-damaged.
2.
South Dakota (approved especially for use with zip code).
3.
Statistics. standard deviation.

L.S.D.

or £.s.d. l.s.d

1.
pounds, shillings, and pence.
Origin
From the Latin word librae, solidī, dēnāriī

sd.

1.

s.d.

1.
sine die.
2.
Statistics. standard deviation.

S.D.1

1.
doctor of science.
Origin
From the Latin word Scientiae Doctor

S.D.2

1.
sea-damaged.
2.
senior deacon.
3.
South Dakota.
4.
special delivery.
5.
Statistics. standard deviation.

S/D

1.
school district.
2.
sight draft.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for SD
Contemporary Examples
Historical Examples
British Dictionary definitions for SD

sd1

abbreviation
1.
sine die
2.
sound
3.
(philosophy) sense datum

sd2

abbreviation
1.
Sudan

SD

abbreviation
1.
South Dakota
2.
(statistics) Also sd. standard deviation
3.
Swaziland (international car registration)

L.S.D.

abbreviation (in Britain, esp formerly)
1.
librae, solidi, denarii
Word Origin
Latin: pounds, shillings, pence
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
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Word Origin and History for SD

l.s.d.

abbreviation of British currency units, from Latin librae, soldi, denarii, Roman equivalent of "pounds, shillings, pence."

Online Etymology Dictionary, © 2010 Douglas Harper
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SD in Medicine

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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