All articles A–Z
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Hospitaller Tripoli
Hospitaller Tripoli was the rule of the North African city of Tripoli, today Libya's capital, by the Knights Hospitaller from 1530 until an Ottoman fleet took it in 1551.
Hospodar
Hospodar, a Slavonic title meaning "lord", was borne by the rulers of Wallachia and Moldavia from the 14th century until 1866, when it was replaced by domn.
Hossam Haick
Hossam Haick is a Technion professor of chemical engineering who pioneered the NA-NOSE breath test, showing in 2009 that gold-nanoparticle sensors can detect lung cancer in exhaled breath.
Hossam Shabat
Hossam Shabat (حسام شبات), Palestinian journalist, 23, Al Jazeera Mubasher correspondent in northern Gaza and Drop Site News contributor, killed March 24, 2025 in an Israeli strike on his car in Beit Lahia; IDF called him a Hamas sniper, which he denied.
Hossbach Memorandum
The Hossbach Memorandum (Hoßbach-Niederschrift) is Colonel Friedrich Hossbach's 10 November 1937 record of Hitler's 5 November 1937 Reich Chancellery conference with military chiefs, setting 1943-45 as the deadline for expansion and naming Austria and Czechoslovakia as first targets; a key Nuremberg exhibit (386-PS).
Hossein Alizadeh
Hossein Alizadeh (حسین علیزاده) is an Iranian master of the tar and setar and a composer, considered one of the most important figures in contemporary Persian music.
Hossein Borghaei
Hossein Borghaei is an American medical oncologist who leads thoracic medical oncology at Fox Chase Cancer Center in Philadelphia and led the CheckMate 057 trial of nivolumab in lung cancer.
Hossein Ghods-Nakhai
Hossein Ghods-Nakhai (قدس نخعی, 1911–1977) was an Iranian poet, writer, and diplomat who served the Pahlavi state as ambassador to London, Washington, and the Holy See.
Hossein Rezazadeh (حسین رضازاده)
Hossein Reza Zadeh (حسين رضازاده), born 1978 in Ardabil, Iranian super heavyweight weightlifter; two Olympic golds (2000, 2004), four world titles, clean & jerk world record 263.5 kg.
Hossein Salami (حسین سلامی)
Hossein Salami (حسین سلامی) was an Iranian major general and commander-in-chief of the Islamic Revolutionary Guard Corps from April 2019 until he was killed in Israeli strikes on 13 June 2025.
Hossein Tavakoli
Hossein Tavakoli (حسين توکلی), Iranian weightlifter born 1978, gold medalist in the men's 105 kg class at the Sydney 2000 Olympics with a 425 kg total; later an Asian Games bronze medalist and coach of Iran and Oman teams.
Hossō
Hossō (法相宗) is a Japanese school of Mahayana Buddhism, one of the six Nara schools, teaching the Yogācāra doctrine of consciousness only, with head temples at Kōfukuji and Yakushiji in Nara.
Host (biology)
Host (biology): the organism a parasite lives on or in, nourishing it without benefit to itself. Key types are definitive, intermediate, paratenic, reservoir, and accidental hosts, plus vectors; humans host nearly 300 parasitic worm species.
Host (film)
Host (2020) is a British screenlife horror film directed by Rob Savage, also known as the Zoom seance horror. Six friends' lockdown video-call séance summons a demon; shot remotely on iPhones in 12 weeks, it holds 98% on Rotten Tomatoes.
Host (network)
A network host, also called a host computer, is a computer or device attached to a network that runs application programs for users and consumes rather than forwards communication services.
Host and Guest
Host and Guest (Georgian: სტუმარ-მასპინძელი, Stumar-Maspindzeli) is an 1893 epic poem by Georgian writer Vazha-Pshavela, telling of a host who shelters a blood enemy despite his community's demands.
Host and hostess clubs
Host and hostess clubs (ホストクラブ) are Japanese nightlife venues where male hosts or female hostesses entertain customers for fees. Notable facts: 925 host clubs employing 21,931 hosts, Kabukicho concentration, and the 2025 Entertainment Business Act amendment against malicious host clubs.
Host cell factor
Host cell factor (HCF-1, HCFC1; related HCF-2) is a family of nuclear transcriptional coactivators. HCF-1 binds VP16 and Oct-1 to activate herpesvirus immediate-early genes, is proteolytically processed into N and C subunits, and regulates cell cycle and chromatin.
Host cell factor C1 regulator 1
HCFC1R1 (HPIP, HCF-1 beta-propeller-interacting protein), gene at 16p13.3 encoding a 138-aa nuclear/cytoplasmic protein that regulates HCF-1 localization via CRM1-dependent export; studied in breast cancer metabolism.
Host city selection for the Olympic Games
Host city selection for the Olympic Games is the process by which the International Olympic Committee elects the host by secret ballot of its members.
Host disease index conventions
Host disease index conventions are the editorial rules behind lists that organize plant diseases by host plant, pairing approved common names with pathogens, guided by APS standards and ISPP naming principles.
Host Identity Protocol
The Host Identity Protocol (HIP) is an IETF network-layer protocol, developed since 1999, that separates identification from location by binding hosts to public keys instead of IP addresses.
Host nation performance at the Olympic Games
Host nation performance at the Olympic Games is the tendency of countries to win more medals when hosting, typically about 2 percentage points of medal share.
Host nation performance at the Paralympic Games
Host nation performance at the Paralympic Games is the measurable boost in a country's medal share when hosting, with Winter hosts averaging 17.79% at home versus 8.78% away.
Host Specificity
Host specificity: the degree to which a parasite or pathogen (also called host range or tropism) is restricted to particular host species. Most pathogens are specialists; specificity reflects ecological encounter filters, physiological compatibility, and coevolutionary history.
Host-based intrusion detection system
A host-based intrusion detection system (HIDS) is a security program installed on a single computer that detects intrusions by monitoring its logs, processes, files, and configuration changes.
Host-Directed Therapy
Host-directed therapy (HDT) treats infections by targeting host cell factors and immune pathways instead of the pathogen, as an adjunct against antimicrobial resistance in tuberculosis, viral hepatitis, COVID-19, and sepsis.
Host-Parasite Interactions
Host-parasite interactions are the relationships in which a parasite draws resources from its host for survival and reproduction while the host mounts defenses against infection.
Host-Pathogen Interactions
Host-pathogen interactions: the dynamic interplay between hosts and infective agents (bacteria, viruses, fungi, parasites), covering damage-response frameworks, immune evasion, host genetics, systems modeling, and host-directed therapies.
Host-seeking and prey biology of scolioid wasps
Scolioid wasps are parasitoid hunting wasps whose females locate buried scarab beetle grubs by chemical cues, paralyze them with a sting, and lay one egg on each host.