All articles starting with D
24,034 articles
Dichloroisocyanurate
Dichloroisocyanurate is a chlorinated derivative of cyanuric acid whose sodium salt, sodium dichloroisocyanurate (NaDCC), is a stable solid chlorine source used to disinfect water, pools, and surfaces.
Dichloromethane
Dichloromethane, also called methylene chloride or DCM, is a colorless, volatile, nonflammable solvent used in paint removers, degreasing, and caffeine extraction, and is probably carcinogenic to humans.
Dichlorophen
Dichlorophen (CAS 97-23-4, 4,4'-dichloro-2,2'-methylenediphenol) is a chlorinated phenolic fungicide, herbicide, bactericide, algicide, and anticestodal agent, first patented in 1944 and now not approved in the EU or US.
Dichlorphenamide
Dichlorphenamide (diclofenamide; Daranide, Keveyis) is an oral carbonic anhydrase inhibitor, first US-approved 1958, now the sole FDA-approved drug for primary hyperkalemic and hypokalemic periodic paralysis.
Dichlorprop
Dichlorprop (2,4-DP), sold as the R-enantiomer dichlorprop-P, is a synthetic auxin phenoxy herbicide (HRAC group O) for broadleaf weeds and brush in cereals and turf; EU-approved until 31 October 2027.
Dichlorprop p
Dichlorprop-P (2,4-DP-p, BAS 044H) is the purified R-enantiomer of the phenoxy herbicide dichlorprop, used on cereals and grassland and as a citrus growth regulator (2-EHE variant); EU-approved, not an endocrine disruptor, approval extended to 31 October 2027.
Dichlorvos
Dichlorvos (2,2-dichlorovinyl dimethyl phosphate), commonly abbreviated DDVP, is a colorless, volatile organophosphate insecticide used since 1961 that kills insects and parasites by irreversibly inhibiting acetylcholinesterase.
Dichotic listening
Dichotic listening is a behavioral paradigm in which different sounds are played to each ear simultaneously, typically showing a right-ear advantage for speech, indicating left-hemisphere language dominance.
Dichotic Listening Tests
Dichotic listening tests present two different sounds simultaneously, one per ear, to assess hemispheric speech specialization; Kimura's 1961 right-ear advantage, reliability issues, and clinical uses distinguish them.
Dichotomy
A dichotomy is a division of a whole into exactly two mutually exclusive, jointly exhaustive parts. In logic it divides a genus into two species by a single attribute.
Dichroic glass
Dichroic glass is glass that appears one color in reflected light and another in transmitted light, an effect made by thin metal-oxide coatings or, in Roman glass, colloidal gold and silver.
Dichroism
Dichroism is the property of a material or optical element absorbing light differently depending on polarization, observed in tourmaline in 1815 and used in spectroscopy and gemology.
Dichroism spectroscopy
Dichroism spectroscopy measures the difference in light absorption between polarizations: circular dichroism reports molecular handedness, and linear dichroism reports orientation in films, membranes, and flowing biopolymers.
Dick (film)
Dick is a 1999 American political comedy directed by Andrew Fleming, starring Kirsten Dunst and Michelle Williams as two teens who secretly caused the Watergate scandal.
Dick (slang)
Dick (slang): English slang word from the nickname for Richard; means a fellow (1550s), the penis (Farmer's 1891, possibly British army slang), a detective (US, 1905-1908), and an insulting person (dickhead, 1969).
Dick Advocaat
Dick Advocaat (Dirk Nicolaas Advocaat, born 1947), Dutch football manager nicknamed the Little General; coached the Netherlands three times, won titles with PSV, Rangers, and Zenit, and led Curaçao, the smallest nation ever to qualify, at the 2026 World Cup as its oldest coach.
Dick Allen
Dick Allen (Richard Anthony Allen, 1942-2020), American MLB first baseman/outfielder for the Phillies, Cardinals, Dodgers, White Sox, and Athletics; 1964 NL Rookie of the Year, 1972 AL MVP, .292 with 351 home runs; posthumously elected to the Baseball Hall of Fame in 2024, inducted July 27, 2025.
Dick and Jane
Dick and Jane are the characters of Scott, Foresman's American basal reading primers, first published in the 1930 Elson-Gray Basic Readers. Created by William S. Gray and Zerna Sharp, they taught millions via the look-say whole-word method until retirement in 1965.
Dick Anderson
Dick Anderson is an American Republican politician serving in the Oregon State Senate since 2021, representing the 5th district and previously serving as mayor of Lincoln City.
Dick Armey
Dick Armey (Richard Keith Armey, born 1940), Texas Republican congressman 1985–2003 and House Majority Leader 1995–2003, Contract with America co-architect with Newt Gingrich, later FreedomWorks chairman who left the group in 2012 with an $8 million payout.
Dick Attlesey
Dick Attlesey (Richard Harold Attlesey, 1929-1984), American USC high hurdler, world 110m/120y hurdles record holder at 13.5 (1950), world No. 1 in 1950-51, 55-race win streak, missed 1952 Olympics through injury.
Dick Blick
Dick Blick (Richard Adolph Blick), American swimmer born 1940 in Los Angeles; won gold in the 4x200 m freestyle relay at the 1960 Rome Olympics in world-record time 8:10.2, and won 11 NAIA titles at North Central College.
Dick Boushka
Dick Boushka (Richard James Boushka, 1934–2019), American basketball forward, Saint Louis University All-American, 1956 Olympic and 1959 Pan Am gold medalist, later Vickers Petroleum president.
Dick Butkus
Dick Butkus (1942-2023), Chicago Bears middle linebacker 1965-1973, Hall of Fame 1979, eight Pro Bowls, 22 interceptions; widely called the most ferocious defender in NFL history.
Dick Button
Dick Button (Richard Totten Button, 1929-2025), American figure skater; two-time Olympic gold medalist (1948, 1952), first to land a double axel and triple jump in competition, later Emmy-winning ABC skating commentator.
Dick Carlson
Dick Carlson (Richard Warner Carlson, 1941-2025) was an American journalist, Voice of America director 1986-1991, U.S. ambassador to the Seychelles, and CPB president; father of Tucker Carlson. Not the self-help author Richard Carlson.
Dick Cavett
Dick Cavett (born 1936, Gibbon, Nebraska) is an American talk-show host, comedian, and writer whose The Dick Cavett Show ran on ABC, PBS, USA, CNBC, and TCM from 1968, known for long-form conversational interviews and Emmy wins in 1972 and 1974.
Dick Celeste
Richard F. "Dick" Celeste, Democratic governor of Ohio 1983-1991, Peace Corps director 1979-81, and US ambassador to India 1997-2001, later president of Colorado College.
Dick Cheney
Dick Cheney (1941-2025), American Republican statesman, vice president 2001-2009 under George W. Bush; earlier Ford White House chief of staff, Wyoming congressman, secretary of defense in the Gulf War, and Halliburton CEO.
Dick Cheney hunting accident
The Dick Cheney hunting accident: on February 11, 2006, Vice President Cheney shot lawyer Harry Whittington with a 28-gauge Perazzi shotgun during a quail hunt at the Armstrong Ranch, Kenedy County, Texas; no charges were filed, and the delayed disclosure drew criticism.