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===Music===
===Music===
* [[Artists and repertoire]]
* [[Artists and repertoire]]
* [[AR (EP)|''AR'' (EP)]], the debut EP by Addison Rae


===Periodicals===
===Periodicals===
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===Other media===
===Other media===
* Ar, city on the fictional planet [[Gor]]
* Ar, city on the fictional planet [[Gor]]
* [[A.r. group]], an avant-garde art group
* ''a.r.'' group of Polish artists and poets, including [[Katarzyna Kobro]]
* [[Alternate reality (disambiguation)]], various fictional concepts
* [[Alternate reality (disambiguation)]], various fictional concepts


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* [[Accounts receivable]], abbreviated as AR or A/R
* [[Accounts receivable]], abbreviated as AR or A/R
* [[Acoustic Research]], an American audio electronics manufacturer
* [[Acoustic Research]], an American audio electronics manufacturer
* [[Aerojet Rocketdyne]], an American aerospace and defense manufacturer
* [[Aerolíneas Argentinas]] (IATA airline code AR)
* [[Aerolíneas Argentinas]] (IATA airline code AR)
* [[AtkinsRéalis]], Canadian engineering company
* Some [[Alfa Romeo]] car models, e.g. AR51
* Some [[Alfa Romeo]] car models, e.g. AR51
* [[Toyota AR engine]]
* [[Toyota AR engine]]
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* [[Accelerated Reader]], educational reading assessment software
* [[Accelerated Reader]], educational reading assessment software
* [[Augmented reality]], an application of virtual reality in the real world
* [[Augmented reality]], an application of virtual reality in the real world
* [[Adobe Aero]], an Adobe software


===Biology and medicine===
===Biology and medicine===
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* [[Aqua regia]], a chemical mixture
* [[Aqua regia]], a chemical mixture
* [[Archimedes number]] in fluid dynamics
* [[Archimedes number]] in fluid dynamics
* [[Argon]], a chemical element with symbol Ar
* [[Argon]], symbol Ar, a chemical element
* [[Aryl]] group in organic chemistry
* [[Aryl]] group in organic chemistry
* [[Relative atomic mass]], symbolized as ''A''<sub>r</sub>
* [[Relative atomic mass]], symbolized as ''A''<sub>r</sub>
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==Military and weapons==
==Military and weapons==
* US Navy hull classification symbol for [[repair ship]]s
* A US Navy hull classification symbol: [[List of auxiliaries of the United States Navy#Repair ships (AR)|Repair ship (AR)]]
* [[Armalite Rifle]]
* [[Armalite Rifle]]
** [[AR-15–style rifle]], rifles based on ArmaLite's AR-15
* [[Army Reserve (Ireland)]], the land component of the Irish Reserve Defence Forces (RDF)
* [[Army Reserve (Ireland)]], the land component of the Irish Reserve Defence Forces (RDF)
* [[Assault rifle]]


==Places==
==Places==
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* [[Arkansas]], United States
* [[Arkansas]], United States
* [[Armstrong–Ringsted Community School District]], Iowa, United States
* [[Armstrong–Ringsted Community School District]], Iowa, United States
* [[Arunachal Pradesh]], a state of India


==Politics and ethics==
==Politics and ethics==

Latest revision as of 09:46, 6 October 2024

AR, Ar, or A&R may refer to:

Arts, entertainment, and media

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Music

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Periodicals

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Other media

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Business

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Language

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  • Ar, the Latin letter R when spelled out
  • Ar (cuneiform), a cuneiform combined sign
  • Arabic, by ISO 639-1 language code

Mathematics, science, and technology

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Computing

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Biology and medicine

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Mathematics

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Physics and chemistry

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Other uses in science and technology

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Military and weapons

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Places

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Politics and ethics

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Other uses

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