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:
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
It pegs SD Guthrie and Hap Seng Plantations as its top picks.
From The Wall Street Journal ● Nov. 19, 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
Riding for Team SD Worx, the 29-year-old claimed victory in thrilling style by winning a four-way sprint finish ahead of France's Pauline Ferrand-Prevot, Liane Lippert of Germany and Poland's Katarzyna Niewiadoma-Phinney.
From BBC ● Apr. 6, 2025
For the same body, the SD varies with the distance.
From Lectures in Navigation by Draper, Ernest Gallaudet
Waterhouse bore away to the sd. sloop to Consult with Capt.
From Privateering and Piracy in the Colonial Period Illustrative Documents by Jameson, J. Franklin (John Franklin)
How do you know your sd. master was poisoned with that Lead?
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 Jameson, J. Franklin (John Franklin)
Madrid, 1776. ——, another copy, Large Paper, sd., uncut, 3l. 3s.
From Notes and Queries, Number 42, August 17, 1850 by Various
Sutton sd. att yt tyme there was noe dogg there, but his wch was a puppy, & Mr Danes that would not byte.
From Anne Bradstreet and Her Time by Campbell, Helen
Error bars represent s.d. of two biological replicates. e, Average editing levels of sites in different tissues from wild-type and Adar2−/− mice.
From Nature ● Oct. 10, 2017
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 c, d, and f, 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
Paris, Maurice Dreyfous, s.d., 18mo, pp. iv-280. 55.—10.
From The Travels of Marco Polo — Volume 2 by Yule, Henry
Appeared in the June 26, 2026, print edition as 'Lead, S.D.
From The Wall Street Journal ● Jun. 25, 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
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
The courtyard of the Oglala Lakota Artspace in Kyle, S.D., features a stainless steel sculpture representing Star Knowledge.
From New York Times ● Jan. 9, 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
George Trumbal of London being their Owner of sd.
From Privateering and Piracy in the Colonial Period Illustrative Documents by Jameson, J. Franklin (John Franklin)
How came you, after you had heard this Talk between Phœbe and Phillis, to get her 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.