SD
1 Americanabbreviation
abbreviation
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sea-damaged.
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South Dakota (approved especially for use with zip code).
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Statistics. standard deviation.
abbreviation
abbreviation
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school district.
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sight draft.
abbreviation
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sine die.
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Statistics. standard deviation.
abbreviation
abbreviation
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sea-damaged.
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senior deacon.
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South Dakota.
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special delivery.
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Statistics. standard deviation.
abbreviation
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South Dakota
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Also: sd. statistics standard deviation
abbreviation
abbreviation
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sine die
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sound
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philosophy sense datum
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:
But many North Koreans used MP3 players or tiny SD cards.
From BBC ● Jul. 17, 2026
And all his rhetoric was deplorable: He, without any credible evidence, blames the flu vaccine for potentially triggering his SD.
From Slate ● Apr. 18, 2026
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 ● Oct. 6, 2025
Edward Snowden removed information using a SD memory card he hid on some occasions in a Rubik’s cube.
From Salon ● Jun. 30, 2025
Assume a line drawn through B parallel to SD, meeting SA in A' and SC in C'.
From An Elementary Course in Synthetic Projective Geometry by Lehmer, Derrick Norman
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 Bell, George
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 Bell, George
Paris, 1818. ——, another edition, 8 vols. royal 8vo. sd. 36s.
From Notes and Queries, Number 42, August 17, 1850 by Various
How do you know your sd. master was poisoned with that Lead?
Madrid, 1776. ——, another copy, Large Paper, sd., uncut, 3l. 3s.
From Notes and Queries, Number 42, August 17, 1850 by Various
Data are mean ± s.d. g, Comparison of mutation spectrums after targeting mouse embryos with sgRNA2b plus Cas9 mRNA or protein.
From Nature ● Sep. 19, 2017
In c, d, h, and i, data represent mean ± s.d.
From Nature ● Mar. 19, 2017
In c, d, and f, data represent mean ± s.d.
From Nature ● Mar. 19, 2017
In b and c, data represent mean ± s.d.
From Nature ● Mar. 19, 2017
Paris, Maurice Dreyfous, s.d., 18mo, pp. iv-280. 55.—10.
From The Travels of Marco Polo — Volume 2 by Yule, Henry
Gracie said one of her earliest “Little House” memories is visiting the family homestead in De Smet, S.D., when she was about 5 years old, and the two have attended several cast reunions.
From The Wall Street Journal ● Jul. 9, 2026
Dean Lewis Buntrock was born June 6, 1931, and grew up in Columbia, S.D., a farming town that was then home to about 250 people.
From The Wall Street Journal ● Apr. 28, 2026
The third-worst vacancy rates nationally were at the Cheyenne, Wyo., and Rapid City, S.D., offices, which each have seven meteorologists on staff and six vacancies.
From Los Angeles Times ● Jul. 16, 2025
Mr. Lauinger was later able to escape after the three stopped at a gas station in Hermosa, S.D., south of Rapid City, according to court documents.
From New York Times ● Apr. 16, 2024
Pretending to be the owner of the house, the S.D. man had invited Jop in.
From "The Hiding Place" by Corrie ten Boom
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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
Kerr Gibbons to get Poyson, & had askt sd Kerr whither Phœbe had not been wth him for sd Poyson.
To the Sheriff of our County of Suffolk his under Sheriff or Deputy or any Constable of the Town of Boston in 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.