# Di

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> Source: https://en.wikipedia.org/wiki/Di
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**Di** or **DI** may refer to:

## Arts and media

### Music

- Di, a tone in the [solfège](/source/Solf%C3%A8ge) ascending chromatic scale existing between Do and Re
- [dizi (instrument)](/source/Dizi_(instrument)) or di, a Chinese transverse flute
- [*D.I.* (band)](/source/D.I._(band)), a punk band from Southern California - [*D.I.* (EP)](/source/D.I._(EP)), a 1983 EP by the same band above

### Other media

- *[The D.I.](/source/The_D.I.)*, 1957 military film by Jack Webb
- *[Dagens Industri](/source/Dagens_Industri)*, a Swedish financial newspaper
- [DI.FM](/source/DI.FM), an internet radio service

## Businesses and organisations

- [Defence Intelligence](/source/Defence_Intelligence), a UK military intelligence agency
- [Defensa Interior](/source/Defensa_Interior), an anti-Franco militant anarchist group in 1960s Spain
- [Deseret Industries](/source/Deseret_Industries), an LDS thrift store
- [Desert Inn](/source/Desert_Inn), a former casino in Las Vegas
- [Direction Italy](/source/Direction_Italy), a liberal-conservative political party in Italy
- [Dirgantara Indonesia](/source/Dirgantara_Indonesia), an Indonesian aircraft company
- [Discovery Institute](/source/Discovery_Institute), an intelligent design advocacy group
- [Marabu (airline)](/source/Marabu_(airline)) (IATA code: DI), an Estonian leisure airline
- [Norwegian Air UK](/source/Norwegian_Air_UK) (former IATA code: DI), a former UK airline
- [DBA (airline)](/source/DBA_(airline)) (former IATA code: DI), a former German low-cost airline
- [DynCorp International](/source/DynCorp_International), a major United States defense contractor
- [Myanmar Directorate of Defence Industries](/source/Myanmar_Directorate_of_Defence_Industries)

## Education

- [Diplomi-insinööri](/source/Diplomi-insin%C3%B6%C3%B6ri), a Finnish 6-year engineering degree
- [Direct instruction](/source/Direct_instruction), an instructional method focused on a systematic curriculum design

## Natural sciences

- *Di*, a prefix used in [organic chemistry nomenclature](/source/IUPAC_nomenclature_of_organic_chemistry)
- [Didymium](/source/Didymium), a mixture of the elements praseodymium and neodymium once thought to be an element
- [Diopside](/source/Diopside), a clinopyroxene mineral
- [Band 3](/source/Band_3), a protein
- [Deionized water](/source/Deionized_water), a type of water deprived of the dissolved impurities of ionic nature
- [Diabetes insipidus](/source/Diabetes_insipidus), a disease
- [Iodothyronine deiodinase](/source/Iodothyronine_deiodinase) type I, one of a subfamily of enzymes important in the activation and deactivation of thyroid hormones
- [Dentinogenesis imperfecta](/source/Dentinogenesis_imperfecta), a genetic disorder of tooth development

## People

### Ethnic groups

- [Di (Five Barbarians)](/source/Di_(Five_Barbarians)) (氐), an ethnic group that overran northern China during the Sixteen Kingdoms period
- [Beidi](/source/Beidi) or Northern Di (狄), ethnic groups living in northern China during the Zhou Dynasty

### Individuals

- [Di (surname)](/source/Di_(surname)) (狄), a Chinese surname sometimes also romanized *Dee*, particularly: - [Di Renjie](/source/Di_Renjie) a Tang-dynasty official later fictionalized in a series of Chinese detective stories
- A diminutive form of the names: - [Diana (given name)](/source/Diana_(given_name)) - [Diane (disambiguation)](/source/Diane_(disambiguation)) - [Dianne (disambiguation)](/source/Dianne_(disambiguation))
- [Diana, Princess of Wales](/source/Diana,_Princess_of_Wales) (1961–1997), commonly known as Princess Di or Lady Di

## Technology

- [Digital intermediate](/source/Digital_intermediate), a filmmaking post-production process
- [Dependency injection](/source/Dependency_injection), a method of decoupling components in software
- [DI unit](/source/DI_unit) or Direct Input box, an audio device used with PA systems and in sound recording studios
- [DI register](/source/DI_register), or destination index, in x86 computer architecture
- Direction indicator, an instrument in aviation also known as a [heading indicator](/source/Heading_indicator)
- Direct ignition, see [Distributor § Direct ignition](/source/Distributor#Direct_ignition)
- Direct injection, a type of [fuel injection](/source/Fuel_injection)

## Religion

- *di* (帝), a Chinese word employed in - the temple names of [deified Chinese emperors](/source/List_of_rulers_of_China) - *[Shangdi](/source/Shangdi)* (Chinese: 上帝, lit. "Lord on High"), the Chinese name for the supreme sky god either in native Chinese beliefs or in translation of monotheistic faiths like Christianity and Islam
- [*di* (Chinese concept)](/source/Di_(Chinese_concept)) (地), the concept of "earth" in traditional Chinese cosmologies
- *di*, an irregular Latin masculine plural of *[deus](/source/Deus)* ("god", "deity")

## Other uses

- [Detective inspector](/source/Detective_inspector) (DI), a rank in certain police forces
- [Di (cuneiform)](/source/Di_(cuneiform)), an ancient written sign
- [Diameter](/source/Diameter), the distance across the middle of a circle
- [Di Department](/source/Di_Department), one of the eight departments of the Sourou Province in Burkina Faso
- [501 (number)](/source/501_(number)) in Roman numerals
- [Disability insurance](/source/Disability_insurance), a form of insurance that insures the beneficiary's earned income against the risk that a disability will make working uncomfortable
- [Hong Kong Document of Identity](/source/Hong_Kong_Document_of_Identity), issued by the Hong Kong Immigration Department
- [Drill instructor](/source/Drill_instructor), a non-commissioned officer in many military or police forces
- [Differentiated integration](/source/Differentiated_integration), a mechanism for the European Union's countries to opt out of EU policies

## See also

- [Lady Di (disambiguation)](/source/Lady_Di_(disambiguation))
- [Die (disambiguation)](/source/Die_(disambiguation))

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Adapted from the Wikipedia article [Di](https://en.wikipedia.org/wiki/Di) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Di?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.