All articles starting with H

Horntail

Horntail (Siricidae), also called wood wasp: large nonstinging hymenopteran wood-boring wasp; about 122 species; females inject eggs plus Amylostereum fungus into dying trees; Sirex noctilio is an invasive pine pest.

Hornwort

Hornworts (Anthocerotophyta) are a bryophyte division of about 220 species with a horn-shaped, continuously growing sporophyte, single chloroplasts with pyrenoids, and Nostoc cyanobacterial symbiosis, sister to liverworts plus mosses.

Hornworts of Great Britain

The hornworts of Great Britain are the four species of the plant division Anthocerotophyta recorded in the country, most often on bare, damp arable clay and loam.

Hornworts of Ireland

The hornworts of Ireland are the hornwort plants recorded from Ireland: three confirmed taxa, Anthoceros agrestis, Anthoceros punctatus, and Phaeoceros laevis, with Phaeoceros carolinianus unresolved.

Horodenka Raion

Horodenka Raion (Городенківський район) was a district in eastern Ivano-Frankivsk Oblast, Ukraine, centered on Horodenka, formed 1939, population 51,400, area 747.2 km², abolished in the 2020 reform and merged into Kolomyia Raion.

Horologium Augusti

Horologium Augusti (Solarium Augusti), Augustus' monumental solar instrument in Rome's Campus Martius, gnomoned by the Montecitorio obelisk from Heliopolis; described by Pliny, partially excavated by Buchner, and debated as sundial versus meridian line.

Horom Citadel

Horom Citadel is a fortified multi-period settlement near Horom village in the Shirak plain of northwestern Armenia, occupied from the Early Bronze Age through the Urartian period and beyond.

Horon

Horon is the characteristic linked circle dance of Türkiye's eastern Black Sea coast, especially Trabzon and Rize, danced hand in hand to the rapid kemençe or tulum bagpipe.

Horonaim

Horonaim (Hebrew חֹרוֹנַיִם, Ḥoronayim) was a town in southern Moab, east of the Dead Sea, attested in the Hebrew Bible and the ninth-century BCE Mesha Stele.

Oct 15, 2026

Horonobe URL

The Horonobe URL (幌延深地層研究センター) is an underground research laboratory in Horonobe, Hokkaido, Japan, where JAEA studies geological disposal of high-level radioactive waste in sedimentary rock.

Horos son of Nechoutes

Horos son of Nechoutes (Demotic: Hor, son of Nekhotf) was an Egyptian mercenary soldier at the garrison town of Pathyris, known through his family archive of papyri dated 134-89 BC.

Horoscope

A horoscope, also called a birth chart or Janam kundali, is a diagram of the Sun, Moon, and planets in the zodiac drawn for an exact time and place.

Oct 15, 2026

Horovod

Horovod is an open source distributed deep learning training framework for TensorFlow, Keras, PyTorch, and Apache MXNet, created at Uber in 2017 to scale training across many GPUs.

Horoya Band National

Horoya Band National, also billed as Horoya Band, is a Guinean national orchestra formed in Kankan in 1965, made a national orchestra in 1971 alongside Bembeya Jazz.

Horrea Galbana

The Horrea Galbana, originally the horrea Sulpicia, were among ancient Rome's largest warehouses in the Emporium district, the central depot for the public grain supply from the late Republic onward.

Horrea Piperataria

The Horrea Piperataria was a Roman storehouse and bazaar for pepper and spices from Egypt and Arabia, built by Emperor Domitian near the Roman Forum.

Horrible Bosses

Horrible Bosses is a 2011 American dark workplace comedy directed by Seth Gordon, starring Jason Bateman, Charlie Day, and Jason Sudeikis as employees plotting to kill their bosses, played by Kevin Spacey, Jennifer Aniston, and Colin Farrell; it grossed $212 million worldwide and spawned a 2014 sequel.

Horrible Bosses 2

Horrible Bosses 2 is a 2014 American comedy film directed by Sean Anders, starring Jason Bateman, Jason Sudeikis, and Charlie Day as friends who kidnap a businessman's son for ransom.

Horrible Histories (2009 TV series)

Horrible Histories (2009 TV series) is a CBBC sketch-comedy show based on Terry Deary's books, with the original Six Idiots cast, Greg Jenner as historical consultant, nine BAFTAs, and a 2015 reboot.

Horrid Henry

Horrid Henry: British children's book series by Francesca Simon, illustrated by Tony Ross, first published 1994; over 21 million copies sold, CITV animated series from 2006, and a 2011 film.

Horrid Henry (TV series)

Horrid Henry (TV series): British animated CITV comedy based on Francesca Simon's books, produced by Novel Entertainment, premiered 31 October 2006, five series, 250 eleven-minute episodes, distributed by Zodiak Kids.

Horror fiction

Horror fiction, also called horror literature, is fiction written to frighten readers with unexplainable phenomena or unearthly threats. It grew from Horace Walpole's 1764 Gothic novel The Castle of Otranto, diverged into terror-versus-horror aesthetics, weird fiction, and psychological horror, and shows a 2025 sales resurgence.

Horror film

Horror film: a fiction film genre designed to elicit fear, from Méliès's 1896 The House of the Devil through Universal monsters, slashers, and today's low-budget box-office leaders; also called art-horror in Carroll's philosophy.

Horror of Fang Rock

Horror of Fang Rock is a 1977 Doctor Who serial, Season 15's opener, written by Terrance Dicks and directed by Paddy Russell, in which the Fourth Doctor and Leela battle a shape-shifting Rutan in a fogbound lighthouse.

Oct 3, 2026

Horror Stories of Tang Dynasty (唐朝诡事录)

Horror Stories of Tang Dynasty (唐朝诡事录, Strange Tales of Tang Dynasty) is a Chinese costume suspense unit-case detective web series from iQiyi and Changxin Media, adapted from Wei Fenghua's 2013 novel and Tang zhiguai notebooks, first aired 2022, with three seasons, a spin-off, and an Asian Academy Creative Awards Best Series win.

Horror Story (film)

Horror Story is a 2013 Hindi-language supernatural horror film directed by Ayush Raina and produced by Vikram Bhatt, about seven friends trapped in a haunted, abandoned hotel.

Horrorcore

Horrorcore, also called horror rap or death rap, is a hip hop subgenre defined by horror-themed lyrics about death, violence, and the occult. Key acts include Geto Boys, Esham, Gravediggaz, and Insane Clown Posse; the term first appeared on KMC's 1991 album.