519,064 articles
Anti-racism
Anti-racism: beliefs, actions, movements, and policies opposing racism to build an egalitarian society. Also called antiracism; spans abolitionism, civil rights, anti-apartheid, and Black Lives Matter, with liberal versus structural theoretical strands.
Anti-radiation missile
An anti-radiation missile (ARM), also called an anti-radar missile, is an air-to-ground missile that homes passively on a target radar's emissions, destroying enemy SAM and antiaircraft radars.
Anti-rape device
Anti-rape devices are products designed to prevent, deter, or document rape, spanning internal barbed devices like Rape-aXe, safety wearables and alarms, phone apps, and consent-recording tools, with mixed evidence of effectiveness and criticism for shifting responsibility onto women.
Anti-realism
Anti-realism: a family of philosophical positions opposing realism along metaphysical, semantic, or epistemological dimensions, including empiricism, instrumentalism, Dummett's meaning-theoretic anti-realism, and moral error theory.
Anti-Recidivism Coalition
Anti-Recidivism Coalition (ARC), California 501(c)(3) nonprofit founded 2013 by producer Scott Budnick; reentry services, Hope and Redemption Team, and policy advocacy for formerly incarcerated people.
Anti-reflective coating
An anti-reflective coating (AR coating) is a thin-film layer applied to optical surfaces to reduce reflection, used on eyeglasses, camera lenses, displays, and solar cells.
Anti-reflux surgery
Anti-reflux surgery is a group of operations, most often fundoplication wrapping the stomach around the esophagus, that reinforce the gastroesophageal junction to treat GERD when medication fails.
Anti-Rent War
Anti-Rent War (1839–1846), also called the Helderberg War: a Hudson Valley tenant farmers' revolt against New York's Dutch-derived patroon leasehold system, triggered by collection of Stephen Van Rensselaer's back rents, ending in the 1846 constitutional ban on long-term leases.
Anti-Rightist Campaign
The Anti-Rightist Campaign (反右派运动) was the CCP's 1957–58 purge following the Hundred Flowers period; 552,877 people were formally labeled rightists under quota systems run by Deng Xiaoping, with lasting economic effects measured to 2000.
Anti-roll bar
An anti-roll bar, also called an anti-sway bar, sway bar, or stabilizer bar, is a torsion spring connecting a vehicle's left and right suspensions to reduce body roll during cornering.
Anti-rolling tank
An anti-rolling tank is a tank built into or onto a ship, partially filled with water whose sloshing generates a moment opposing roll; types include free-surface, U-tube, and flume tanks.
Anti-Russian sentiment
Anti-Russian sentiment, or Russophobia, is prejudice or hostility toward Russia and Russians, documented in Europe since the 15th century; the term is also used by the Kremlin to dismiss criticism.
Anti-Saloon League
The Anti-Saloon League, founded 1893 in Oberlin, Ohio by Howard Hyde Russell and nationally organized in 1895, was a non-partisan single-issue temperance lobby led by Wayne Wheeler that pioneered pressure politics and drove the Eighteenth Amendment.
Anti-satellite weapon
An anti-satellite weapon (ASAT) is any system designed to disable or destroy satellites, spanning direct-ascent and co-orbital missiles, jamming, lasers, and cyber operations, tested since 1959 by the United States, Russia, China, and India.
Anti-Secession Law
The Anti-Secession Law (反分裂国家法) is a Chinese law adopted on 14 March 2005 by the National People's Congress, authorizing non-peaceful means against Taiwan independence while stating principles for peaceful reunification.
Anti-ship missile
An anti-ship missile is a guided missile designed to attack surface vessels, launched from ships, submarines, aircraft, or shore, and is the primary weapon of modern naval warfare.
Anti-sigma factors
Anti-sigma factors are bacterial proteins that bind and inhibit sigma factors, blocking RNA polymerase holoenzyme formation. Classes include cytoplasmic (FlgM, SpoIIAB, DnaK) and membrane-bound ECF anti-σ factors (RseA), released by proteolysis, partner-switching, or direct sensing.
Anti-siphoning laws in Australia
Anti-siphoning laws in Australia, under the Broadcasting Services Act 1992, keep listed major sporting events available free to air by barring pay TV and, since 17 December 2024, streaming services from buying rights first.
Anti-Slavic sentiment
Anti-Slavic sentiment, or antislavism, is prejudice and discrimination against Slavic and Eastern European peoples, from Nazi racial policy to contemporary German discrimination and wartime anti-Ukrainian rhetoric.
Anti-social behaviour
Anti-social behaviour (ASB): UK legal category for criminal and non-criminal conduct causing nuisance or harm, governed by the 2014 Act and Crime and Policing Act 2026 respect orders; about 1.0 million police-recorded incidents in England and Wales in 2025.
Anti-social behaviour order
Anti-social behaviour order (ASBO): British civil order under the Crime and Disorder Act 1998 prohibiting named acts or places, breach a criminal offence; replaced in England and Wales in 2014 by civil injunctions and CBOs, still used in Scotland.
Anti-soiling coating
An anti-soiling coating is a thin functional layer applied to solar module glass, mirrors, or heliostats to reduce dust accumulation, since soiling can cut efficiency by up to 34%.
Anti-solvent dripping processing for perovskite solar cells
Anti-solvent dripping is a film-formation step for perovskite solar cells, introduced in 2014, in which a poor solvent dripped during spin coating triggers rapid crystallization.
Anti-spam techniques
Anti-spam techniques, also known as spam filtering, are the methods email providers, network operators, and senders use to detect, block, or discourage unsolicited bulk email (spam).
Anti-Spiritual Pollution Campaign
The Anti-Spiritual Pollution Campaign (清除精神污染) was a short-lived ideological and political campaign launched by the Chinese Communist Party in October 1983, aimed at Western-influenced ideas and lifestyles, and called off by early 1984.
Anti-SSA/Ro autoantibodies
Anti-SSA/Ro autoantibodies (anti-Ro52, anti-Ro60) target intracellular RNA-binding proteins; they mark Sjögren's disease, SLE, and neonatal lupus, cross the placenta to cause congenital heart block, and often appear years before diagnosis.
Anti-Stokes Raman scattering
Anti-Stokes Raman scattering is inelastic light scattering in which a photon gains energy by annihilating a thermally excited vibration, and its intensity ratio to Stokes scattering serves as a contactless thermometer.
Anti-Stokes Raman spectroscopy
Anti-Stokes Raman spectroscopy detects photons scattered with higher energy than the incident light, using their strength to measure excited molecular states and temperature, as in furnace gas thermometry.
Anti-streptolysin O
Anti-streptolysin O, or ASO titer, is an antibody against a toxin of group A Streptococcus, measured by a blood test used to confirm recent streptococcal infection, especially rheumatic fever.
Anti-submarine rocket
An anti-submarine rocket is a rocket-propelled weapon launched from a surface ship or submarine that carries a torpedo or depth charge into the water near a submarine, best known through the US Navy's ASROC.