ACR may refer to:

Medicine

Albumin/creatinine ratio Microalbuminuria is a term to describe a moderate increase in the level of urine albumin. It occurs when the kidney leaks small amounts of albumin into the urine, in other words, when an abnormally high permeability for albumin in the glomerulus o ...

in urine *

ACR score ACR score is a scale to measure change in rheumatoid arthritis symptoms. It is named after the American College of Rheumatology The American College of Rheumatology (ACR; until 1985 called American Rheumatism Association) is an organization of and ...

for rheumatoid arthritis * ACR gene, encoding the enzyme

acrosin Acrosin is a digestive enzyme that acts as a protease. In humans, acrosin is encoded by the ''ACR'' gene. Acrosin is released from the acrosome of spermatozoa as a consequence of the acrosome reaction. It aids in the penetration of the Zona Pellu ...

American College of Radiology The American College of Radiology (ACR), founded in 1923, is a professional medical society representing nearly 40,000 diagnostic radiologists, radiation oncologists, interventional radiologists, nuclear medicine physicians and medical physicists. ...

American College of Rheumatology The American College of Rheumatology (ACR; until 1985 called American Rheumatism Association) is an organization of and for physicians, health professionals, and scientists that advances rheumatology through programs of education, research, advocacy ...

Places

Accrington railway station Accrington railway station serves the town of Accrington in Lancashire, England. It is a station on the East Lancashire line east of Blackburn railway station operated by Northern. It is also served by Caldervale Line express services between ...

, UK, National Rail code *

Araracuara Airport Araracuara Airport is an airport serving Araracuara, in the Caquetá Department of Colombia. Araracuara was the site of a former penal colony for Colombia's worst and most dangerous criminals. The town and airport are on the north bank of the ...

, Colombia, IATA code

Science and technology

Absolute Category Rating Absolute Category Rating (ACR) is a test method used in quality tests. The levels of the scale are, sorted by quality in decreasing order: * Excellent * Good * Fair * Poor * Bad In this method, a single test condition (generally an image or a v ...

, a subjective quality test method *

Acumulador de Carga Rápida Acumulador de Carga Rápida (ACR) () is a battery electric tram system marketed by Construcciones y Auxiliar de Ferrocarriles (CAF) of Spain. Trams equipped with ACR are fast-charged while at stops; elsewhere they require no overhead line, which i ...

, a battery electric tram system * Advanced CANDU reactor, a nuclear reactor *

Advanced Communications Riser {{unreferenced, date=June 2009, bot=yes The Advanced Communications Riser, or ACR, is a form factor and technical specification for PC motherboard expansion slots. It is meant as a supplement to PCI slots, a replacement for the original Audio/ ...

, a PC slot format * Advanced Contrast Ratio or

Dynamic Contrast The contrast ratio (CR) is a property of a display system, defined as the ratio of the luminance of the brightest shade (white) to that of the darkest shade (black) that the system is capable of producing. A high contrast ratio is a desired aspect ...

in an LCD display *

Copper tubing Copper tubing is most often used for heating systems and as a refrigerant line in HVAC systems. Copper tubing is slowly being replaced by PEX tubing in hot and cold water applications. There are two basic types of copper tubing, soft copper and ri ...

for air conditioning and refrigeration *

Antarctic Cold Reversal The Antarctic Cold Reversal (ACR) was an important episode of cooling in the climate history of the Earth during the deglaciation at the close of the last ice age. It illustrates the complexity of the climate changes at the transition from the Plei ...

, climatic cooling about 14,500 years ago *

Attenuation-to-crosstalk ratio 400px, right Attenuation-to-crosstalk ratio (ACR) is a parameter that is measured when testing a communication link, which represents the overall performance of the cable. AcR is a mathematical formula that calculates the ratio of attenuation to ...

of communication links *

Automatic content recognition Automatic content recognition (ACR) is a technology to identify content played on a media device or present within a media file. Devices implementing ACR can allow the device or the manufacturer to collect content consumption information automatic ...

of video *

Adobe Camera Raw Adobe Photoshop is a raster graphics editor developed and published by Adobe Inc. for Windows and macOS. It was originally created in 1988 by Thomas and John Knoll. Since then, the software has become the industry standard not only in raster ...

, a raw image file converter

Military and weapons

Adaptive Combat Rifle The Adaptive Combat Rifle (ACR) is a modular assault rifle designed by Magpul Industries of Austin, Texas, and known initially as the Masada. In late January 2008, Bushmaster Firearms International entered into a licensing agreement with Magpul ...

Advanced Combat Rifle The Advanced Combat Rifle (ACR) was a United States Army program, started in 1986, to find a replacement for the M16 assault rifle. Under the stress of battle the average soldier with an M16 may shoot a target at 45 meters, but hit probability i ...

, a US Army program *

Armored cavalry regiment An armored cavalry regiment (ACR) is a regiment of the United States Army (Active Component, or Reserve Component (Army Reserve or Army National Guard)) organized for the specific purposes of reconnaissance, surveillance, and security. The reg ...

of the US army or national guard * AČR,

Army of the Czech Republic The Army of the Czech Republic ( cs, Armáda České republiky, AČR), also known as the Czech Army, is the military service responsible for the defence of the Czech Republic in compliance with international obligations and treaties on collectiv ...

(''Armáda České republiky'') *

Steyr ACR The Steyr ACR was a prototype flechette-firing assault rifle built for the US Army's Advanced Combat Rifle program of 1989/90. Although the Steyr design proved effective, as did most of the weapons submitted, the entire ACR program ended with non ...

, an Austrian assault rifle

Other uses

A Certain Ratio A Certain Ratio (abbreviated as ACR) are an English post-punk band formed in 1977 in Flixton, Greater Manchester by Peter Terrell (guitar, electronics) and Simon Topping (vocals, trumpet), with additional members Jez Kerr (bass, vocals), Martin ...

, a British post-punk band * Accelerated chart ratio, affects streaming totals in the Official Charts Company's singles chart *

Achi language Achi (''Achí'' in Spanish) is a Mayan language very closely related to Kʼicheʼ (''Quiché'' in the older orthography). It is spoken by the Achi people, primarily in the department of Baja Verapaz in Guatemala. There are two Achi dialects. R ...

, a Mayan language of Guatemala *

Americas Cardroom ACR Poker is a US-themed online poker site founded in 2001 and headquartered in San José, Costa Rica. The company serves parts of the United States, Canada, Latin America, and several other countries. It is a subsidiary of the Winning Poker Ne ...

, online poker site * Dodge Viper ACR, a car {{Disambiguation