All articles starting with D
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Delayed gratification
Delayed gratification: postponing a smaller immediate reward for a larger delayed one, studied via Mischel's marshmallow test and delay-discounting tasks. Reliability is modest (r ≈ .67), classic predictive claims have weakened, and children now wait longer than in the 1960s.
Delayed hydride cracking
Delayed hydride cracking is a time-dependent crack growth mechanism in zirconium alloys, in which hydrogen diffuses to a stressed crack tip, precipitates as brittle hydride, and fractures in repeated steps.
Delayed match to sample task
The delayed match to sample task is a behavioral memory test in which a subject sees a sample, waits through a delay, and picks the matching stimulus.
Delayed neutron
A delayed neutron is a neutron emitted by a fission product seconds to minutes after fission, following beta decay of a neutron-rich precursor, with fewer than 1% of fission neutrons delayed.
Delayed onset muscle soreness
Delayed onset muscle soreness (DOMS), or muscle fever, is pain and stiffness peaking 24–72 hours after unaccustomed eccentric exercise, caused by ultrastructural muscle damage, inflammation, and nociceptor sensitization; massage, compression, and immersion help, stretching does not.
Delayed pressure urticaria
Delayed pressure urticaria (DPU), also called pressure urticaria, is a rare chronic inducible urticaria (ICD-11 EB01.2) in which sustained pressure causes painful deep swellings after 4-6 hours, lasting up to 3 days; antihistamines are first-line, omalizumab for resistant cases.
Delayed puberty
Delayed puberty: absence of pubertal signs 2–2.5 SD later than population mean (age 13 girls, 14 boys). Most cases are constitutional delay of growth and puberty, a benign self-limited variant; main alternative is hypogonadism.
Delayed separation of umbilical cord
Delayed separation of umbilical cord, ICD-11 KC20.0, is failure of the stump to detach beyond 3 weeks; up to 10% of newborns, usually benign, but a first sign of leukocyte adhesion deficiency when paired with omphalitis, absent pus, and leukocytosis.
Delayed sleep-wake phase disorder
Delayed sleep-wake phase disorder (DSWPD, formerly DSPS/DSPD), ICD-11 7A60: a circadian rhythm sleep-wake disorder with persistently delayed sleep timing; normal sleep on a delayed schedule; affects about 1% of adults, 3.3-4.6% of adolescents; treated with timed melatonin and light therapy.
Delayed union of fracture
Delayed union of fracture (ICD-11 FB80.9): a fracture not united within the expected consolidation time but still healing slowly, between normal union and nonunion; risk factors include smoking, diabetes, and unstable fixation.
Delayed-Action Preparations
Delayed-Action Preparations (MeSH D003692), also called extended-, sustained-, controlled-, or depot-release formulations, are drug dosage forms acting over time via controlled-release technology, used to lengthen dosing intervals and smooth serum drug levels.
Delayed-choice quantum eraser
The delayed-choice quantum eraser is a quantum optics experiment first realized by Kim, Yu, Kulik, and Shih in 2000, in which which-path information is erased after the photon is detected.
Delbert A. Fisher
Delbert A. Fisher (1928–2026) was an American pediatric endocrinologist, elected to the National Academy of Medicine in 1988, whose work launched newborn screening for congenital hypothyroidism.
Delbert Hosemann
Delbert Hosemann is an American Republican politician serving as Mississippi's 33rd Lieutenant Governor and President of the State Senate, elected in 2023 with over 60 percent of the vote.
Delbert McClinton
Delbert McClinton (born 1940, Lubbock, Texas) is an American honky-tonk blues singer, songwriter, and harmonica player. Known for Bruce Channel's "Hey! Baby," advising John Lennon on "Love Me Do," four Grammys, and the Sandy Beaches Cruise.
Delby Lemieux
Delby Lemieux, Dartmouth offensive lineman from Duxbury, Massachusetts (2022-2025), AP First-Team All-American, 2026 Senior Bowl participant, signed by the Minnesota Vikings after the 2026 NFL Draft.
Delco Proper
Delco Proper is an American comedy web series created by Tommy Pope and John McKeever, starring Tommy Pope, John McKeever, and Tim Butterly, set at a Delaware County lumberyard.
Delcy Rodríguez
Delcy Rodríguez is a Venezuelan politician who has been acting president since January 2026, after US forces captured President Nicolás Maduro, while serving as vice president since 2018.
Dele Abiodun
Admiral Dele Abiodun, born Prince Cyril Bamidele Abiodun Alele in 1948, is a Nigerian juju bandleader who created the Adawa style, led the Top Hitters Band, and headed PMAN.
Dele Alli
Dele Alli (Bamidele Jermaine Alli), English attacking midfielder born 1996; MK Dons to Tottenham, 67 goals in 269 games, two PFA Young Player awards, 37 England caps, later Everton, Besiktas, Como, without a club since September 2025.
Deleastartus
Deleastartus is a name in the Tyrian king list preserved by Josephus quoting Menander of Ephesus; the transmitted text makes him the father of King Astartus, not a king.
Deleb
Deleb (Dèleb) is a traditional Somali running-fight board game of the tâb family: two teams throw four black-and-white sticks as dice, pass a three-stage opening, race pieces in a loop, and win by capturing all opposing pieces.
Delegate (American politics)
Delegate (American politics): a person representing a state or district at a US party national convention, voting to nominate presidential candidates. Pledged delegates are bound to primary winners; superdelegates are unpledged. First conventions date to 1831.
Delegated proof of stake
Delegated proof of stake (DPoS) is a blockchain consensus method in which token holders vote for a small set of delegates who validate transactions and produce blocks, used by EOSIO and TRON.
Delegation
Delegation, also called delegated authority, is a core management skill: assigning a task together with the authority and resources needed, while the delegator retains accountability.
Delegation for the Adoption of an International Auxiliary Language
The Delegation for the Adoption of an International Auxiliary Language (Délégation pour l'adoption d'une langue auxiliaire internationale), founded 1901 by Couturat and Leau, chose a reformed Esperanto, Ido, in 1907.
Delek Logistics Partners
Delek Logistics Partners is an American midstream energy master limited partnership formed in 2012, operating crude oil, natural gas, and water pipelines primarily around the Permian Basin.
Delek US
Delek US is an American diversified downstream energy company based in Brentwood, Tennessee, operating four refineries in Texas, Arkansas, and Louisiana with a combined capacity of 302,000 barrels per day.
DeLena Johnson
DeLena Johnson is an American Republican politician serving in the Alaska House of Representatives, representing District 25 since 2023 and serving as House Minority Leader since 2025.
Deleni
Deleni: name of several Romanian villages with recorded archaeological sites, including a Roman-era stone quarry and tumuli in Constanța County, a La Tène settlement in Vaslui, and Bronze Age and Hallstatt finds in Sălaj and Mureș counties.