All articles starting with H
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Hellenistic period
The Hellenistic period (323–30 BC) spans Alexander the Great's death to Cleopatra VII's death, when Greek koine, coinage, and culture spread through the successor Antigonid, Ptolemaic, and Seleucid kingdoms across the Mediterranean and Near East.
Hellenistic philosophy
Hellenistic philosophy: Greek and Roman thought from the late fourth century BCE after Alexander's conquests to about 100–31 BCE, centered on the Epicurean, Stoic, and skeptical Academic schools in Athens, known through fragments and later reports.
Hellenistic religion
Hellenistic religion, also called Hellenistic Greek religion, is the religious life of the Greek world and Alexander's successor kingdoms, 323–31 BCE: civic cult continuity, ruler cult, eastern deities like Isis and Sarapis, mystery cults, and syncretism.
Hellenistic-era warships
Hellenistic-era warships were the oared fighting galleys of the Mediterranean between 323 and 31 BC, when larger galleys replaced the classical trireme as the ship of the line.
Hellenization
Hellenization, or Hellenism, is the spread and adoption of Greek language and culture by non-Greek peoples, catalyzed by Alexander the Great's conquests; a contested concept in scholarship, contrasted with Romanization and studied through local agency and hybridity.
Heller myotomy
Heller myotomy is a surgical operation for achalasia that divides the lower esophageal sphincter muscle, usually laparoscopically, relieving swallowing difficulty in 90 to 95% of patients.
Helles
Helles, also known as Hellbier, is a pale, bottom-fermented lager that originated in Munich, Bavaria, Germany, in 1894. It is characterized by its clean, bready malt flavor and is the everyday session beer of Bavaria.
Hellespontus Montes
Hellespontus Montes is a 711-km-long mountain range on the western rim of Mars' Hellas basin, IAU-named in 1973, formed by collapse of the impact basin walls, and one of Mars' three highest sand-flux dune regions.
Hellfest
Hellfest, also known as Hellfest Open Air, is a French extreme music festival held each June in Clisson. Founded in 2006, it draws 240,000 spectators.
Hellfighters
Hellfighters is a 1968 Universal adventure drama directed by Andrew V. McLaglen, starring John Wayne as oil well firefighter Chance Buckman, based on Red Adair, who served as technical advisor; premiered in Houston, December 1968.
Hellfire (2026 film)
Hellfire (2026) is an American action thriller directed by Isaac Florentine, starring Stephen Lang, Harvey Keitel, and Dolph Lundgren, released on VOD February 17, 2026 by Saban Films.
Hellfire Caves
Hellfire Caves, West Wycombe, Buckinghamshire: man-made chalk and flint caverns dug 1748–1752 for Sir Francis Dashwood to relieve unemployment and build a road, later linked to his Hellfire Club.
Hellfire Club
Hellfire Club refers to several 18th-century British and Irish gentlemen's societies, chiefly Dashwood's Medmenham Monks (c.1750), the Irish club of the Earl of Rosse, and the disputed Wharton club; known for mock-monastic ritual, blasphemy rumors, and Wilkes.
Hellfire Club (comics)
Hellfire Club (comics): Marvel Comics secret society of wealthy elites created by Chris Claremont and John Byrne, debuting in Uncanny X-Men #129 (1980) during the Dark Phoenix Saga; led by the Inner Circle with chess-piece ranks, counting Emma Frost and Sebastian Shaw among its leaders.
Hellfish
Hellfish is the performing name of Julian Cobb, a British hardcore techno producer and DJ from Essex, active since the early 1990s and founder of Deathchant Records.
Hellgate High School
Hellgate High School, formerly Missoula County High School, is a public high school in Missoula, Montana, established in 1908 and known for its International Baccalaureate Diploma Program.
Hellhound
Hellhound: a supernatural dog of world folklore tied to the underworld; exemplars Cerberus and Garmr; possible Indo-European origin; British black dogs, sleep paralysis explanations, and modern media roles.
Hellier
Hellier is a 2019 independent paranormal documentary series, also called the Kentucky Goblins investigation, directed by Karl Pfeiffer for Planet Weird. Two seasons, 15 episodes, follow the 2012 David Christie goblin emails and a 2017 trip to Hellier, Pike County, Kentucky.
Hellinger distance
The Hellinger distance, or Hellinger metric, is a metric on probability distributions that compares square-root densities, named after Ernst Hellinger and widely used in statistical lower bounds and decision trees.
Hellions (Marvel Comics)
The Hellions are several successive Marvel Comics mutant teams, first appearing in New Mutants #16 in 1984 as students of Emma Frost, the White Queen's rivals of the New Mutants.
Hellisheiði Power Station
Hellisheiði Power Station (Hellisheiðarvirkjun) is the largest geothermal power plant in Iceland, near Reykjavík, generating 303 MW and heating more than half the capital region, and hosts the Carbfix carbon capture project.
Hellman & Friedman
Hellman & Friedman is a San Francisco private equity firm founded in 1984 by Warren Hellman and Tully Friedman, known for the 1985 Levi Strauss buyout.
Hellmann's and Best Foods
Hellmann's and Best Foods are two brand names for the same mayonnaise product line, split at the Rocky Mountains in the United States (Hellmann's east, Best Foods west). Founded from Richard Hellmann's Manhattan delicatessen in 1905 and Best Foods' San Francisco plant, both brands share the blue-ribbon logo and are owned by Unilever.
Hellmut Fritzsche
Hellmut Fritzsche (1927–2018) was a German-born American experimental physicist and Louis Block Professor at the University of Chicago, a leading experimenter on amorphous semiconductors who confirmed Ovshinsky's switching effect and co-developed the Cohen–Fritzsche–Ovshinsky band model.
Hellmut G. Augustin
Hellmut G. Augustin, born 1959, is a German vascular biologist and professor at Heidelberg University who heads vascular oncology research at the German Cancer Research Center.
Hellmut von Gerlach
Hellmut (Georg) von Gerlach was a German journalist, politician, and pacifist who moved from antisemitic conservative editor to co-founder of the German Democratic Party and exile in Paris.
Hellmuth Kneser
Hellmuth Kneser (1898–1973) was a German mathematician best known for proving the prime decomposition of 3-manifolds in 1929 and constructing a half-iterate of the exponential function in 1950.
Hello
Hello is an English interjection used as a greeting, as the conventional telephone answer, and as an exclamation of surprise, first recorded in print in the 1820s.
Hello (2008 film)
Hello is a 2008 Hindi-language Indian film directed and produced by Atul Agnihotri, adapted from Chetan Bhagat's novel One Night @ the Call Center and released in India on 10 October 2008.
Hello (2017 film)
Hello (Telugu: హలో!) is a 2017 Telugu romantic action thriller directed by Vikram K. Kumar, produced by Nagarjuna, starring Akhil Akkineni and Kalyani Priyadarshan; released 22 December 2017, it flopped commercially but holds a 7.4 IMDb rating.