All articles A–Z

Ammonium transporter

Ammonium transporter (Amt/Mep/Rh family, AMT, MEP, Rh): trimeric 11-helix membrane proteins moving NH3/NH4+ in all domains of life, with a Phe-gate, twin-His motif, and debated NH3 versus NH4+ transport mechanism.

Ammonoidea

Ammonoidea (ammonoids, ammonites): extinct external-shelled cephalopods from the Devonian to Cretaceous, related to coleoids, with chambered buoyancy shells, complex sutures, and brief post-K-Pg survival.

Oct 22, 2026

Ammonothermal growth of gallium nitride

Ammonothermal growth of gallium nitride is a bulk crystal growth method, first used to produce GaN in 1995, that yields the highest structural quality bulk GaN but grows slowly.

Ammons haunting case

Ammons haunting case (200 Demons House), alleged 2011 demonic possession of Latoya Ammons' family in Gary, Indiana, documented by police and child services, exorcised by Rev. Michael Maginot, later inspiring The Deliverance.

Ammotherapy

Ammotherapy, also called psammotherapy or sand-bath therapy, is treatment by application of hot sand, traditionally for rheumatic conditions; MeSH D000646, with very limited clinical evidence from three studies.

Ammotragus

Ammotragus, the Barbary sheep or aoudad (Ammotragus lervia), is a Vulnerable North African caprine genus closer to goats than sheep, with six subspecies, up to 145 kg males, and introduced wild populations in the US and Europe.

Sep 29, 2026

Ammoxidation

Ammoxidation is a gas-phase catalytic partial oxidation that converts methyl groups into nitrile groups using ammonia and oxygen over mixed metal oxide catalysts, used industrially to make acrylonitrile from propylene.

Ammu (pharaoh)

Ammu, also known as Aahotepre, was a pharaoh of Egypt's Second Intermediate Period, conventionally the fourth king of the 14th Dynasty, known only from scarab seals and dated around 1760 to 1745 BC.

Ammuladdin

Ammuladdin, also known as Ammuladi, was a king of the Qedarites, an Arab tribal polity, who joined raids on Assyria's western provinces around 652 BC and was repulsed by the Moabites.

Ammuna

Ammuna was a king of the Hittite Old Kingdom, dated around 1550–1530 BC, who succeeded Zidanta I and was succeeded by Huzziya I, whose accession followed the murder of Ammuna's probable sons and heirs.

Ammunira

Ammunira of Biruta was the ruler of Beirut, called Biruta in the letters, in the mid-14th century BCE, known only from letters he wrote to the pharaohs preserved in the Amarna archive.

Ammunition

Ammunition is the material fired, scattered, dropped, or detonated from a weapon, most commonly a self-contained cartridge combining a projectile, propellant, primer, and cartridge case.

Ammurapi

Ammurapi, also known as Amurapi, was the last king of Ugarit, reigning from 1215 BC until the kingdom fell around 1190–1185 BC during the Late Bronze Age collapse.

Ammy Virk

Ammy Virk, born Amninderpal Singh Virk in 1992 in Punjab, is an Indian singer, actor, and producer in Punjabi and Hindi cinema, known for Nikka Zaildar, Qismat, and the 2021 Hindi film 83.

Amna Ilyas

Amna Ilyas is a Pakistani model and actress based in Karachi who debuted in the 2013 film Zinda Bhaag, won Lux Style Awards, and advocates against colorism.

Amna Nawaz

Amna Nawaz is an American broadcast journalist, co-anchor and co-managing editor of PBS News Hour since January 2023 (with Geoff Bennett, succeeding Judy Woodruff). Former ABC News anchor and NBC Islamabad Bureau Chief; founder of NBC's Asian America; four Peabody Awards.

Amnatos

Amnatos (Αμνάτος) is a village and local community in the municipality of Rethymno on Crete, built on a hilltop overlooking the Cretan Sea about 14 km east of Rethymno.

Oct 10, 2026

Amneh Al-Rimawi

Amneh Al-Rimawi (آمنة عبد الجابر الريماوي), born 1957, is a Palestinian trade unionist and women's rights activist from Beit Rima who was imprisoned by Israeli authorities.

Amnesia

Amnesia is partial or total loss of the ability to recall past experiences or store new memories, classified as retrograde, anterograde, or sense-specific. Causes include brain injury, stroke, Wernicke-Korsakoff syndrome, encephalitis, dementias, and dissociative trauma; transient global amnesia is the most common acute form.

Amnesia Ibiza

Amnesia Ibiza is a nightclub in San Rafael on the Spanish island of Ibiza, founded in 1976 and known as the birthplace of the Balearic beat style.

Amnesia: A Machine for Pigs

Amnesia: A Machine for Pigs (AAMFP) is a 2013 first-person horror game by The Chinese Room, published by Frictional Games, sequel to The Dark Descent; set in 1899 London, Oswald Mandus, Metacritic 72, 120,000 first-week sales.

Amnesia: Rebirth

Amnesia: Rebirth (Frictional Games, 20 October 2020) is a first-person survival horror sequel to The Dark Descent, following Tasi Trianon in 1937 Algeria with a fear-based transformation mechanic replacing the sanity meter; over 100,000 copies sold by March 2021.

Amnesia: The Dark Descent

Amnesia: The Dark Descent (Frictional Games, 8 September 2010) is a first-person survival horror game set in 1839 Prussia; weaponless protagonist Daniel hides from monsters while managing lantern light and sanity. Won 2011 IGF awards; remaster planned for late 2026.

Amnesiac (album)

Amnesiac (Radiohead, 2001) studio album from the same sessions as Kid A; UK number 1, Grammy-winning Stanley Donwood library packaging, Gnostic memory themes, later ranked among the 2000s' best albums.

Amnesty

Amnesty is an official clemency act exempting groups or classes from prosecution, usually for political offenses, distinct from individual pardons; used in peace processes but constrained by international human rights law, as in Peru, Iraq, and Thailand.