All articles starting with D
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Dyatlov Pass incident
Dyatlov Pass incident: February 1959 deaths of nine Soviet hikers led by Igor Dyatlov on Kholat Saykhl, northern Urals; tent cut from inside; 2021 Gaume-Puzrin study explains deaths via delayed wind-loaded slab avalanche.
Dybbuk
Dybbuk (dybbukim): in Jewish folklore and Kabbalah, the clinging soul of a dead person that possesses a living host; rooted in 16th-century Safed Lurianic Kabbalah (gilgul, ibbur), treated by rabbinic exorcism, and made famous by An-ski's 1920 Yiddish play The Dybbuk.
Dybbuk (film)
Dybbuk (2021) is a Hindi horror film by Jay K, a remake of his Malayalam Ezra, starring Emraan Hashmi and Nikita Dutta; released 29 October 2021 on Prime Video, about a dybbuk box in Mauritius. Distinct from the 1937 Yiddish film The Dybbuk.
Dybbuk box
Dybbuk box, or Dibbuk box: a wine cabinet Kevin Mannis listed on eBay in 2003 with a fictional haunted backstory about a trapped dybbuk spirit; a 1950s Karoff minibar whose legend he later admitted inventing.
Dyck path
A Dyck path is a lattice path of up and down steps that starts and ends at level 0 and never goes below, counted by Catalan numbers.
Dyckia
Dyckia Schult. & Schult.f. is a genus of about 192 accepted xeromorphic bromeliad species native from Brazil to northern Argentina, with succulent spiny leaves, CAM photosynthesis, and yellow to orange flowers; also called dyckia or sawblade (D. brevifolia).
Dyclonine
Dyclonine, marketed as Dyclone and DycloPro, is a ketone-class topical local anesthetic used to numb the mouth, throat, and airway, sold over the counter in Sucrets lozenges.
DYDJI trial
DYDJI trial (NCT01180452), a GETAID prospective French multicentre cohort study of endoscopic chromoendoscopy screening for small bowel dysplasia and adenocarcinoma in 101 high-risk jejuno-ileal Crohn's disease patients; 4% prevalence, 33% sensitivity, screening not recommended.
Dydoe
Dydoe: a male genital piercing through the corona (rim) of the glans penis, usually done in pairs. Name coined by Doug Malloy from "doodad"; anatomy-dependent, prone to migration and rejection, with disputed healing times (6-8 weeks to 2-4 months).
Dydrogesterone
Dydrogesterone (Duphaston, Femoston) is a synthetic retroprogesterone progestogen developed by Philips-Duphar in 1959, used with estradiol in menopausal hormone therapy and for IVF luteal phase support; oral doses 10–20 times lower than progesterone, no androgenic or glucocorticoid activity.
Dye
A dye is a soluble colorant absorbed into materials like textile fibers, leather, or paper, distinguished from insoluble surface pigments; about 800,000 tonnes are produced yearly.
Dye laser
A dye laser is a laser whose gain medium is a fluorescent organic dye in liquid solvent, the first broadly tunable laser, invented in 1966 at IBM.
Dye penetrant inspection
Dye penetrant inspection, also called liquid penetrant testing, is a nondestructive testing method that reveals surface defects in nonporous metals, ceramics, and plastics by drawing dye into the flaw.
Dye tracing
Dye tracing is a hydrogeology technique that injects fluorescent dye, typically uranine, into water and measures it downstream to reveal underground flow paths and velocities.
Dye-sensitized photoelectrochemical cells
Dye-sensitized photoelectrochemical cells (DSPECs) use a molecular dye on a semiconductor electrode to absorb visible light and drive water splitting, producing hydrogen fuel, and can also convert CO2.
Dye-sensitized solar cell
A dye-sensitized solar cell, also called a Grätzel cell, is a photovoltaic device where dye on titanium dioxide absorbs light; invented at EPFL in 1991, it excels indoors.
Dyeing
Dyeing is the process of applying colorants to textile fibers, yarns, or fabrics so the color survives washing and wear; it accounts for 70 to 80% of textile industry wastewater.
DYEN
DYEN is a Rotterdam-based Dutch hard techno and rave DJ and producer, active since 2017, who founded the RECKLESS label and calls his sound neorave.
Dyess Air Force Base
Dyess Air Force Base is a United States Air Force installation in Abilene, Texas, opened in 1956 and named for Lt. Col. William Dyess, a Bataan prisoner of war who escaped.
Dyfed Regio
Dyfed Regio is a 1,750-km-wide mottled regio on Jupiter's moon Europa in the trailing anti-Jovian quadrant, IAU-approved in 2007 and named after the Welsh mythological kingdom of Dyfed.
Dyggve-Melchior-Clausen disease
Dyggve-Melchior-Clausen disease (DMC, DYM syndrome) is a rare autosomal recessive spondylo-epi-metaphyseal dysplasia with short-trunk dwarfism, microcephaly, intellectual disability, double-humped vertebrae, and lacy iliac crests, caused by DYM gene mutations.
Dyhia Belhabib
Dyhia Belhabib is an Algerian-trained fisheries scientist at Ecotrust Canada in Vancouver who estimates illegal fishing by reconstructing national catch records and building criminal-history databases of fishing vessels.
Dying Earth
Dying Earth: Jack Vance's four-book far-future fantasy sequence (The Dying Earth 1950 to Rhialto the Marvellous 1984) and the eponymous dying-sun subgenre it named, source of D&D's Vancian magic.
Dying Fetus
Dying Fetus, American brutal death metal/grindcore band formed 1991 in Upper Marlboro, Maryland; also called deathgrind. John Gallagher is the sole constant member; nine albums including Destroy the Opposition (2000) and Make Them Beg for Death (2023) on Relapse Records.
Dying for Sex
Dying for Sex is a 2025 FX/Hulu eight-episode comedy-drama limited series by Elizabeth Meriwether and Kim Rosenstock, adapted from the Wondery podcast, starring Michelle Williams as Molly Kochan and Jenny Slate as Nikki Boyer.
Dying for Sex (podcast)
Dying for Sex is a 2020 Wondery podcast by Molly Kochan and Nikki Boyer about Kochan's sexual adventures after a terminal Stage IV breast cancer diagnosis; it inspired the 2025 FX/Hulu series.
Dying Gaul
The Dying Gaul is an ancient Roman marble statue of a wounded Celtic warrior in the Capitoline Museums, Rome, copied from a lost Hellenistic bronze of about 220 BC.
Dying Light
Dying Light (2015) is a first-person open-world zombie survival game by Techland, published by Warner Bros., set in Harran; known for parkour, melee crafting, and a day-night cycle with Volatiles, spawning Dying Light 2 (2022) and The Beast (2025).
Dying Light (series)
Dying Light is Techland's open-world zombie survival series of three first-person parkour action games: Dying Light (2015), Dying Light 2: Stay Human (2022), and Dying Light: The Beast (2025), known for day-night cycles, Kyle Crane and Aiden Caldwell, and 50+ million players.
Dying Light 2
Dying Light 2: Stay Human is Techland's 2022 first-person parkour zombie survival game set in Villedor, starring Aiden Caldwell; Metacritic 76, 5 million+ copies, long post-launch support and The Beast spinoff.