di
preposition
from; of: used in Italian personal names, originally to indicate place of origin.
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di
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Di
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DI
DIDepartment of the Interior.
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di-
di-a prefix occurring in loanwords from Greek, where it meant “two,” “twice,” “double” (diphthong ); on this model, freely used in the formation of compound words (dicotyledon; dipolar ) and in chemical terms (diatomic; disulfide ).
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di.
di.abbreviationdiameter.
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di–
di–A prefix that means “two,” “twice,” or “double.” It is used commonly in chemistry, as in dioxide, a compound having two oxygen atoms.
di
1 American
[dee]
/ di /
Or
Di
preposition
di
2
American
[dee]
/ di /
noun
Music.
Di
3
American
[dahy]
/ daɪ /
noun
Di
4
American
Symbol, Chemistry.
DI
5
American
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Department of the Interior.
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drill instructor.
di-
6
American
di-
7
American
di-
8
American
di.
9
American
Or
dia
abbreviation
di-
1
British
combining form
Di
2
British
symbol
di-
3
British
prefix
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twice; two; double
dicotyledon
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containing two specified atoms or groups of atoms
dimethyl ether
carbon dioxide
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a nontechnical equivalent of bi- 1
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DI
4
British
abbreviation
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Defence Intelligence
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Detective Inspector
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Donor Insemination
di–
Scientific
Etymology
Origin of di1
< Italian < Latin dē
Origin of di2
Perhaps alteration of do 2
Origin of di-6
Middle English ≪ Latin < Greek, combining form representing dís twice, double, akin to dýo two. See bi- 1, twi-
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:
Additional support for science analysis from the Istituto Nazionale di Astrofisica in Italy; and the Centre National d'Études Spatiales in France is gratefully acknowledged.
From Science Daily ● Aug. 2, 2026
In an interview with Italian digital sports media platform Cronache di spogliatoio,, external Malago confirmed talks had been held with the Spaniard and that "exceptions" could be made for his salary.
From BBC ● Jul. 22, 2026
Estimated by art historians to have been begun sometime after 1317, the frescoes are considered to be one of Giotto di Bondone's masterpieces.
From Barron's ● Jun. 12, 2026
Still, Luca di Montezemolo, Ferrari’s former chairman, told reporters on Tuesday that the automaker is “risking the destruction of a legend.”
From Los Angeles Times ● May 27, 2026
Then he realized Nico di Angelo had looked the same way after facing Cupid in the ruins of Salona.
From "The House of Hades" by Rick Riordan
The latest data have raised doubts about the strength of U.S. demand, says Antonio Di Giacomo, a senior market analyst at XS.com, in a note.
From The Wall Street Journal ● Aug. 13, 2026
"We're not in a drought situation yet, but at this rate, there's less than three weeks of water left in reserve," said Damiano Di Simine, an expert with environmental group Legambiente.
From Barron's ● Jun. 27, 2026
But fast forward five decades, and a similar seven-pass manoeuvre by Argentina against France in the 2022 final - finished by winger Angel Di Maria – took just 12 seconds.
From BBC ● Jun. 17, 2026
Thirty-five years ago it became the focus of a brutal, long-running civil war in Sierra Leone, immortalised by Leonardo Di Caprio in the 2006 Hollywood film Blood Diamonds.
From BBC ● Jun. 3, 2026
Dieter was staying with Di Carlo and his family.
From "Newjack: Guarding Sing Sing" by Ted Conover
“We think the DI progress in particular could see consensus expectations for full year margins increase towards the upper half of the guided range, driving a positive reaction to the shares today,” Citi analysts wrote.
From The Wall Street Journal ● Feb. 12, 2026
DI Rob Smith, from the Major Crime Investigation Team, thanked the public for their support during the initial investigation.
From BBC ● May 31, 2025
JD Wyatt gives Poly 47-37 lead after three quarters of DI semifinal at Granada Hills.
From Los Angeles Times ● Feb. 27, 2025
College sports, especially at the DI level, are highly publicized events.
From Salon ● Apr. 22, 2024
Since then CI is the refraction of the radius BC, and DI is parallel to CM, VC must be to CD as N to GC, according to what has been demonstrated in Article 31.
From Treatise on Light by Christiaan Huygens
"This relationship aligns with natural shifts in the color of ambient illumination, detectable during twilight by mammals with di- and tri-chromatic visual systems."
From Salon ● Nov. 8, 2023
In the midafternoon, when the sun is high overhead—the earth’s equator close to the ball of burning fire, just like the di- agram in Understanding Our Universe—we turn onto the dirt road to Yana Urku.
From "The Queen of Water" by Laura Resau
What about lecithin and mono-, di-, and triglycerides?
From "The Omnivore's Dilemma" by Michael Pollan
NOTE.—The forms di- and dif- are euphonic forms of dis-; dif- is used before a root beginning with a vowel.
From New Word-Analysis by William Swinton
The number of NO3 groups which unite with the cellulose molecule under these conditions depends upon the temperature, pressure, etc., employed during the nitration process; di-, tri-, tetra-, penta-, and hexanitrates are all known.
From The Chemistry of Plant Life by Roscoe Wilfred Thatcher
Thomy ten. di. feod. in Bliston dict. feod.
From The Survey of Cornwall And an epistle concerning the excellencies of the English tongue by Richard Carew
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.
