All articles starting with D
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Duck virus hepatitis
Duck virus hepatitis (DVH), also called duck viral hepatitis, is an acute, highly fatal viral disease of ducklings under 6 weeks, caused by duck hepatitis A virus genotypes and duck astroviruses, with hemorrhagic liver lesions and up to 95% mortality.
Duck, duck, goose
Duck, duck, goose is a children's circle chasing game, called Duck, Duck, Gray Duck in Minnesota; earliest found print reference 1924, Swedish origin theory unproven.
Duck, North Carolina
Duck, North Carolina: Outer Banks town in Dare County known for its MSD-funded beach nourishment program (first project 2017, next in 2027) and award-winning NC 12 living shoreline resiliency project completed in 2024.
Duck, You Sucker!
Duck, You Sucker! (Giù la testa, A Fistful of Dynamite) is Sergio Leone's 1971 Mexican Revolution epic starring Rod Steiger and James Coburn, his penultimate film and last western.
DuckDB
DuckDB is an open-source, in-process analytical (OLAP) SQL database system created by Mark Raasveldt and Hannes Mühleisen at CWI Amsterdam as the analytical counterpart to SQLite.
DuckDuckGo
DuckDuckGo is an independent internet privacy company based in Paoli, Pennsylvania, founded by Gabriel Weinberg in 2008, known for a tracking-free search engine and a privacy browser.
Duckie (group)
Duckie (group), founded November 1995 at the Royal Vauxhall Tavern, London, is a queer performance collective known for its 27-year Saturday club night, Olivier-winning C'est Duckie!, Lullaby, Gay Shame, and community projects like The Posh Club.
Ducking stool
Ducking stool, also called cucking stool, an early modern English and colonial American punishment chair on a beam used to duck women convicted as common scolds into water, from about 1550 to the last recorded use in 1809.
DuckLake
DuckLake is an open lakehouse format from the DuckDB team (DuckLabs), storing metadata in a SQL catalog database (SQLite, PostgreSQL, MySQL, DuckDB) and data in Iceberg-compatible Parquet files. Launched May 2025, v1.0 April 2026, MIT-licensed.
Duckman
Duckman: Private Dick/Family Man, also called Duckman, is an American adult animated sitcom (1994–1997, USA Network) created by Everett Peck from his Dark Horse comic, voiced by Jason Alexander, running 70 episodes and winning a CableAce Award.
Duckpin bowling
Duckpin bowling is a small-ball variant of ten-pin bowling from Baltimore, played with a 5-inch fingerless ball, 9.4-inch pins, three rolls per frame, and no recorded sanctioned 300 game.
Ducktail
Ducktail (duck's ass, D.A.): 1950s men's hairstyle with oiled sides combed back to a central part at the nape, worn by greasers, popularized by Elvis Presley and James Dean, and spread internationally to Teddy Boys and South African Ducktail gangs.
DuckTales (2017 TV series)
DuckTales (2017 TV series): Disney Television Animation reboot by Matt Youngberg and Francisco Angones, Disney XD 2017–2021, 75 episodes, voiced by David Tennant as Scrooge McDuck; distinct from the 1987 series.
DuckTales the Movie: Treasure of the Lost Lamp
DuckTales the Movie: Treasure of the Lost Lamp (1990) is Disney's first Television Animation theatrical feature, following Scrooge McDuck, the nephews, and Webby against Merlock the Magician for a genie's lamp; it grossed $18.1 million.
Duckweed
Duckweed (乘风破浪, Cheng feng po lang) is a 2017 Chinese comedy-drama-fantasy film directed by Han Han, in which a rally driver travels back to 1998 and befriends his young father.
Duckweed powder
Duckweed powder, dried Lemnoideae biomass used as a plant-protein ingredient; GRAS-acknowledged in the US (GRN 742, Parabel Ltd., 2018) at 1-24 g per serving; up to 45% protein, Rubisco-based.
Duckworth–Lewis–Stern method
Duckworth–Lewis–Stern (DLS) method, successor to Duckworth–Lewis, is the ICC's formula for revised targets in rain-interrupted limited-overs cricket, using overs-and-wickets resource percentages, a 235-run par average, and ICC-distributed calculator software.
Duco Telgenkamp
Duco Telgenkamp, Dutch field hockey forward (born 2002, The Hague), Olympic gold medalist Paris 2024 after the decisive shoot-out goal against Germany, 2023 European champion and top scorer, Kampong then Amsterdam, owner of Revived.
Ducommun
Ducommun Incorporated is an American aerospace and defense manufacturer headquartered in Costa Mesa, California. Founded as a Los Angeles hardware store in 1849, it is the oldest company in California.
Ducord, HPC Cord Blood
Ducord is an allogeneic cord blood therapy made by Duke University's Carolinas Cord Blood Bank and FDA-licensed in 2012 for unrelated donor stem cell transplantation.
Duct (flow)
A duct, also called a heating or air duct, is a closed conduit with a noncircular cross-section used to carry fluids, most commonly air in HVAC systems.
Duct tape
Duct tape is a pressure-sensitive cloth tape with a polyethylene backing, fabric scrim, and rubber-based adhesive, invented during World War II and used for temporary repairs, though it is discouraged on actual ductwork.
Ductal carcinoma in situ of breast
Ductal carcinoma in situ (DCIS), also called stage 0 or intraductal breast cancer, is abnormal cells confined to milk ducts. Treated with lumpectomy plus radiation, mastectomy, or endocrine therapy; COMET trial supports monitoring for low-risk cases.
Ductile fracture
Ductile fracture is the failure mode of a metal preceded by substantial plastic deformation, proceeding by nucleation, growth, and coalescence of microscopic voids inside the material.
Ductile iron
Ductile iron, also known as nodular or spheroidal graphite iron, is a cast iron with spherical graphite nodules that give it useful strength, developed by Keith Millis in 1943.
Ductile machining
Ductile machining is a precision cutting method in which brittle materials such as glass, silicon, and ceramics are removed by plastic flow rather than fracture, leaving crack-free surfaces.
Ductility
Ductility is the ability of a solid material to deform permanently under tensile stress before it fractures, measured as percent elongation or reduction in area; mild steel and copper are ductile.
Ductless mini-split heat pump
A ductless mini-split heat pump is an air-source heating and cooling system linking an outdoor unit to wall- or ceiling-mounted indoor units by refrigerant lines, with no ductwork.
Ductography
Ductography, also called galactography, is a breast imaging test in which contrast is injected into a discharging milk duct before mammography to evaluate pathologic nipple discharge.
Ductus arteriosus
Ductus arteriosus: fetal vessel linking pulmonary artery and aorta; normally closes 24-72 hours after birth via oxygen rise and prostaglandin E2 fall. Persistent patency (PDA) affects 0.3-0.8% of term infants, up to 80% of those born before 28 weeks.