Edgepedia

Around the World in Eighty Days

Jules Verne's adventure novel Le Tour du monde en quatre-vingts jours, serialized in Le Temps in 1872: Phileas Fogg's £20,000 Reform Club wager, the date-line day, Detective Fix, and its stage, film, and real-world imitations.

Aroundhome

Aroundhome, formerly Käuferportal, is a Berlin-based online broker founded in 2008 by Robin Behlau and Mario Kohle that connects German homeowners with local firms for home products and services.

Arousal

Arousal: physiological and psychological responsiveness state spanning sleep to vigilance, driven by brainstem ascending systems (locus coeruleus, basal forebrain, orexin); distinct from attention and valence, and prerequisite for assessing consciousness.

Arowana

Arowana, also called bonytongue or dragonfish (Asian arowana, Scleropages formosus), a group of six large predatory freshwater fish species in Osteoglossum and Scleropages across South America, Asia, and Australia; mouthbrooding, Gondwanan biogeography, CITES-regulated trade.

Oct 22, 2026

Arp 142

Arp 142, nicknamed the Penguin and the Egg, is a pair of interacting galaxies 326 million light-years from Earth in the constellation Hydra, cataloged in Halton Arp's Atlas of Peculiar Galaxies.

Arp 2

Arp 2 is a globular cluster in Sagittarius, one of four in the Sagittarius dwarf spheroidal galaxy, alongside M54, Terzan 7, and Terzan 8, roughly 9 billion years old.

Arp 220

Arp 220, also cataloged as IC 4553, is the nearest ultraluminous infrared galaxy, two spiral galaxies merged beginning about 700 million years ago, located about 250 million light-years away in Serpens.

Sep 19, 2026

Arp Frique

Arp Frique is the musical project of Niels Nieuborg, a Rotterdam-born, Amsterdam-based multi-instrumentalist whose funk, disco, and Cape Verdean records debuted in 2018 on Rotterdam's Rush Hour label.

Sep 21, 2026

Arp Schnittger

Arp Schnittger is a German plant developmental biologist who has held the plant developmental biology professorship at Universität Hamburg since 2014, known for work on genomic imprinting in seeds and meiosis.

ARP spoofing

ARP spoofing, also known as ARP cache poisoning or ARP poisoning, is a local network attack in which forged ARP messages redirect traffic for interception, denial of service, or session hijacking.

Arp2/3 complex

Arp2/3 complex, also called ARP2/3 or actin-related protein 2/3 complex, is a seven-subunit eukaryotic actin nucleator that creates 70° branched actin filament networks, activated by WASP/WAVE nucleation-promoting factors, ATP, and actin; linked to Wiskott-Aldrich syndrome, ARPC1B immunodeficiency, and cancer invasion.

ARP4754A

ARP4754A is an SAE Aerospace Recommended Practice, Guidelines for Development of Civil Aircraft and Systems, covering requirements validation, verification, and development assurance levels for civil aircraft certification.

Sep 23, 2026

Arpa Ke'un

Arpa Ke'un (آرپا کاون), also Arpa Khan, was a Mongol prince who ruled the Ilkhanate from late 1335 until his defeat and death in May 1336.

Oct 22, 2026

Árpád

Árpád (c. 850 – 907?) was grand prince of the Hungarian tribal confederation who led the conquest of the Carpathian Basin around 895, founding the dynasty that ruled Hungary until 1301.

Arpad Barany

Árpád Bárány (Bárány Árpád, born 24 June 1931, Budapest) is a Hungarian épée fencer, Olympic team gold medalist at Tokyo 1964 and 1959 world team champion, later a coach in Iran and Hungary and fencing referee.

Arpad Busson

Arpad Busson, known as "Arki", is a French-born financier who founded EIM Group in 1992, built it into a leading fund of hedge funds, and founded the charity Ark in 2002.

Sep 24, 2026

Árpád dynasty

The Árpád dynasty (Árpád-ház) was the first ruling house of Hungary, which ruled from the late ninth century until the male line died out in 1301.

Oct 20, 2026

Arpad Lengyel

Arpad Lengyel (Lengyel Árpád, 1915–1993) was a Hungarian swimmer who won bronze in the 4 × 200 m freestyle relay at the 1936 Berlin Olympics and the 1934 European title.

Arpad Orban

Árpád Orbán (1938–2008), Hungarian central defender from Győr; won football gold at the 1964 Tokyo Olympics with Hungary, and with Győri ETO won the 1963 league title and three Hungarian Cups. Not to be confused with Willi Orbán or Viktor Orbán.

ARPANET

ARPANET, the Advanced Research Projects Agency Network, was a U.S. Defense Department packet-switched network linking universities and government sites from 1969, from which the Internet grew.

Arpanet (The Americans)

"ARPANET" is the seventh episode of season two of The Americans (FX, April 9, 2014), written by Joshua Brand and directed by Kevin Dowling, in which KGB spy Philip Jennings and agent Charles Duluth bug the ARPANET, the Internet precursor, while Nina faces an FBI polygraph.

ARPE-19

ARPE-19 (Adult Retinal Pigment Epithelial cell line-19) is a spontaneously immortalized human retinal pigment epithelial cell line derived in 1986 from a 19-year-old male donor, widely used in ocular drug discovery.

ARPEGE

ARPEGE is the global numerical weather prediction model operated by the French weather service Météo-France, in service since 1992 and covering forecasts up to about four days ahead.

Arpeggio

Arpeggio (Italian, from arpa, harp): a chord's notes played one after another in ascending or descending order; a specific type of broken chord, marked by a wavy line, with the Alberti bass as its best-known named pattern.

Arpeggio of Blue Steel (蒼き鋼のアルペジオ)

Arpeggio of Blue Steel (蒼き鋼のアルペジオ, Aoki Hagane no Arpeggio), a science fiction manga by Ark Performance serialized in Young King Ours since 2009, set in a world blockaded by the sentient Fleet of Fog; adapted as the 2013 CG anime Ars Nova and two films.