All articles starting with H
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Hysteretic damping
Hysteretic damping, also called structural or loss factor damping, is a damping model in which the damping force is proportional to displacement or strain rather than to velocity.
Hysteretic model
A hysteretic model is a mathematical model whose output depends on the history of the input, used to simulate structures, magnetic materials, and smart devices.
Hysteria
Hysteria, from Greek hystera (uterus), is a historical medical diagnosis for unexplained physical and neurological complaints. Abandoned by DSM-III in 1980, it survives as conversion disorder, dissociative disorders, histrionic personality disorder, and functional neurological disorder.
Hysteria (2011 film)
Hysteria (2011 film), a Tanya Wexler romantic comedy starring Maggie Gyllenhaal and Hugh Dancy, dramatizes Mortimer Granville's Victorian invention of the electromechanical vibrator; premiered at TIFF 2011, released by Sony Pictures Classics in 2012.
Hysteria (Def Leppard album)
Hysteria, Def Leppard's fourth studio album (Mercury, August 3, 1987), produced by Mutt Lange over three years at a reported $5 million cost; No. 1 in US and UK, seven hit singles including "Love Bites" and "Pour Some Sugar on Me", over 20 million sold, 12x US platinum.
Hysteria!
Hysteria! is a 2024 Peacock supernatural horror series, created by Matthew Scott Kane, about a teen metal band posing as Satanists during the 1980s Satanic Panic in Happy Hollow, Michigan; eight episodes aired October 18, 2024, and it was cancelled in February 2025.
Hysterical strength
Hysterical strength: extraordinary strength displays in life-threatening emergencies, attributed to the fight-or-flight adrenaline rush. Popular accounts say real; physiologists find stress-induced force enhancement unsupported, with faster muscle relaxation the better-evidenced effect.
Hysterolites
Hysterolites (Hysterolites hystericus) is an extinct Lower Devonian spiriferid brachiopod genus named by Schlotheim in 1820, family Hysterolitidae, recorded from Spain, Belgium, Germany, Uzbekistan, and Yukon.
Hysteropexy
Hysteropexy is a surgical procedure for uterine prolapse that suspends the uterus to ligaments or the sacrum, a uterus-sparing alternative to hysterectomy often chosen by women who want to keep the uterus.
Hysterosalpingography
Hysterosalpingography (HSG, uterosalpingography) is a fluoroscopic x-ray exam of the uterine cavity and fallopian tubes using injected contrast, mainly to assess tubal patency in infertility; distinguished from HyCoSy/HyFoSy ultrasound tests by its use of ionizing radiation.
Hysteroscopes
A hysteroscope is a thin, telescope-like instrument inserted through the vagina and cervix to view the inside of the uterus, diagnose abnormal bleeding, and remove polyps, fibroids, or adhesions.
Hysteroscopic myomectomy
Hysteroscopic myomectomy is a minimally invasive procedure that removes submucosal uterine fibroids through the cervix using a hysteroscope, relieving abnormal bleeding in 70 to 99% of cases.
Hysteroscopic resection
Hysteroscopic resection is a minimally invasive gynecological operation in which a hysteroscope views the uterine cavity and cuts away lesions such as polyps, submucosal fibroids, and uterine septa.
Hysteroscopy
Hysteroscopy (uterine endoscopy) examines the uterine cavity via a thin camera scope through the cervix, using CO2 or saline distension. First done by Pantaleoni in 1869; now largely office-based, diagnosing and treating polyps, fibroids, adhesions, and bleeding causes.
Hysterotomy
Hysterotomy is a surgical incision through the wall of the pregnant uterus, usually via the abdomen, to evacuate its contents, typically to end a pregnancy before fetal viability.
Hystrix
Hystrix (Linnaeus, 1758) is the genus of Old World crested porcupines, family Hystricidae, with 8 species including H. cristata, H. africaeaustralis, and H. indica; short-tailed, rattle-quilled, nocturnal herbivores of Africa and Asia.
Hystrix cristata
Hystrix cristata, the crested or North African crested porcupine (Linnaeus 1758), a large hystricid rodent of North Africa and the Sahel with a disjunct Italian population, Least Concern, range expanding north in Italy.
HystSim
HystSim, now sold as HYST Mentor, is a virtual-reality hysteroscopy training simulator developed at ETH Zurich, launched by VirtaMed in 2008, and used with real hysteroscopic instruments.
HYTE
HYTE is a Berlin-based electronic music event brand and promoter created by Michael Weicker, known for its weekly Amnesia residency in Ibiza from 2015 and 24-hour HYTE NYE marathons at Funkhaus Berlin.
HyTest Invest Oy (海肽生物)
HyTest Invest Oy (海肽生物) is a Finnish maker of antibodies and antigens for diagnostic tests, founded in Turku in 1994 and owned by China's Mindray since 2021.
Hyūga-class helicopter destroyer
The Hyūga-class helicopter destroyer (ひゅうが型護衛艦) is a class of two helicopter-carrying destroyers of the Japan Maritime Self-Defense Force, JS Hyūga and JS Ise, commissioned from 2009.
Hyūganatsu (writer)
Hyūganatsu (日向夏, Natsu Hyuuga) is a private Fukuoka-based Japanese light-novel author, creator of The Apothecary Diaries (Kusuriya no Hitorigoto), debuted 2012 via Shōsetsuka ni Narō; over 40 million copies sold, with manga, Nippon TV anime, and French translations.
Hyuk
Hyuk (Han Sang-hyuk) is a South Korean singer and actor who debuted in 2012 as a member of the boy group VIXX, later signing with Companion Company in 2023.
Hyukoh (혁오)
Hyukoh (혁오) is a four-member South Korean indie rock band formed in May 2014, led by Oh Hyuk, all members born in 1993. Known for Wi Ing Wi Ing, Comes and Goes, albums 23 and AAA, and 2026 singles Godspeed! and KoK.
Hyun Bin (현빈)
Hyun Bin (현빈, born Kim Tae-pyung, 1982) is a South Korean actor known for My Lovely Sam-soon, Secret Garden, Confidential Assignment, Crash Landing on You, and Harbin, and co-founder of VAST Entertainment.
Hyun Bong-sik (현봉식)
Hyun Bong-sik (현봉식), born 1984 in Busan, is a prolific South Korean character actor who debuted in The Pirates (2014) and became known for 1987, Strangers from Hell, Mouse, and D.P.
Hyun Jin-geon
Hyun Jin-geon (현진건, 1900–1943), pen name Bing-heo, was a Korean novelist and journalist who pioneered realist short fiction and is best known for "A Lucky Day" (1924).
Hyun Song Shin
Hyun Song Shin (신현송) is a Korean economist known for research on procyclical leverage and global liquidity, who became Governor of the Bank of Korea in April 2026.
Hyun Suk Jung
Hyun Suk Jung is a South Korean materials scientist and professor at Sungkyunkwan University in Suwon, known for research on perovskite solar cells, flexible photovoltaics, and titanium dioxide nanomaterials.
Hyun Woo-seok (현우석)
Hyun Woo-seok (현우석) is a South Korean actor and former model born 2001 in Chuncheon; film debut credits include A Home from Home, Time to Be Strong, and Netflix series If Wishes Could Kill (2026) as Ha-joon.