SD
abbreviation
the intelligence and counterespionage service of the Nazi SS.
SD
1 Americanabbreviation
SD
2
American
abbreviation
-
sea-damaged.
-
South Dakota (approved especially for use with zip code).
-
Statistics. standard deviation.
sd.
3
American
abbreviation
S/D
4
American
abbreviation
-
school district.
-
sight draft.
s.d.
5
American
abbreviation
-
sine die.
-
Statistics. standard deviation.
S.D.
6
American
abbreviation
S.D.
7
American
abbreviation
-
sea-damaged.
-
senior deacon.
-
South Dakota.
-
special delivery.
-
Statistics. standard deviation.
SD
1
British
abbreviation
-
South Dakota
-
Also: sd. statistics standard deviation
abbreviation
sd
2
British
abbreviation
-
sine die
-
sound
-
philosophy sense datum
sd
3
British
abbreviation
Etymology
Origin of SD1
From the German word Sicherheitsdienst
Origin of S.D.6
From Latin Scientiae Doctor
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
I link the onset of my SD to my intubation rather than my profession, but honestly, I can’t be sure if that’s what caused it.
From Slate ● Apr. 18, 2026
Collaborations with OP Nayyar, Burman and SD Burman made her a household name.
From BBC ● Apr. 12, 2026
SD Guthrie and Genting Plantations have flagged potential charges, he notes.
From The Wall Street Journal ● Feb. 4, 2026
Edward Snowden removed information using a SD memory card he hid on some occasions in a Rubik’s cube.
From Salon ● Jun. 30, 2025
The two pencils are thus identical, by the preceding theorem, and any ray SD must coincide with its corresponding ray SD'.
From An Elementary Course in Synthetic Projective Geometry by Derrick Norman Lehmer
King of England: Van den Derden Edewaert, Coning van Engelant, Rymkronyk geschreven het Jaer 1347, door Jan de Klerk van Antwerpen, 8vo., sd., scarce, 1s. 6d.
From Notes and Queries, Number 58, December 7, 1850 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc. by George Bell
Rime e Satire, 1 vol.; together 5 vols. royal 8vo., sd., uncut, 24s.
From Notes and Queries, Number 58, December 7, 1850 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc. by George Bell
Robert Cook, master of the Shipe Called the blow dove of london. the sd. wm.
From Privateering and Piracy in the Colonial Period Illustrative Documents by J. Franklin (John Franklin) Jameson
Drakes his bay, Because that when he was their he water'd. their is a brave fresh water River, And to thiss day is standing a church which the sd. cap.
From Privateering and Piracy in the Colonial Period Illustrative Documents by J. Franklin (John Franklin) Jameson
Paris, 1818. ——, another edition, 8 vols. royal 8vo. sd. 36s.
From Notes and Queries, Number 42, August 17, 1850 by Various
Data are mean ± s.d. f, Quantification of proportions of OCT4-null, mosaic or wild-type mouse blastocysts after microinjection of the sgRNA2b–Cas9 ribonucleoprotein complex at concentrations indicated.
From Nature ● Sep. 19, 2017
In a and d–j, data represent mean ± s.d.
From Nature ● Mar. 19, 2017
Mean ± s.d., n = 3 biological replicates for each species tested.
From Nature ● May 3, 2016
Mean ± s.d. b, Assignment of functional classes to the signature reveals a wide range of functional processes with sporulation- and regulation-associated genes dominating.
From Nature ● May 3, 2016
S.D., salutem dicit=Sends greeting. s.d., sine die=Without day.
From Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) by Various
Appeared in the June 26, 2026, print edition as 'Lead, S.D.
From The Wall Street Journal ● Jun. 25, 2026
Traveling to the North American point in 2019 involved flying to Rapid City, S.D., driving a couple of hours into the countryside and walking across a few fields.
From The Wall Street Journal ● Feb. 23, 2026
He regularly stops in smaller places like Bismarck, N.D., and Rapid City, S.D., to “pick up another week of playing,” he said.
From Los Angeles Times ● Jan. 16, 2024
Hazardous conditions were also forecast across portions of east-central and southeastern South Dakota, southern North Dakota and Nebraska, said Kyle Weisser, a meteorologist with the National Weather Service in Sioux Falls, S.D.
From New York Times ● Dec. 25, 2023
Pretending to be the owner of the house, the S.D. man had invited Jop in.
From "The Hiding Place" by Corrie ten Boom
Test statistic = 2.18. p-value = 0.0719 using ⎛ x¯ d = 3.71, sd = 4.5⎞ .
From Textbooks ● Mar. 27, 2020
Cornered, I moved content on to a micro sd card, using an external card reader, then moved that card into the phone.
From The Guardian ● Mar. 31, 2018
Using the differences data, calculate the sample mean and the sample standard deviation. x¯ d = 3.71, sd = 4.5.
From Textbooks ● Sep. 19, 2013
Wicocomoco river ... near ye Mill Dam of ye sd.
From The Stronghold A Story of Historic Northern Neck of Virginia and Its People by Miriam Haynie
Quaco says that Ker told him that Mark asked the sd.
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
