All articles starting with D
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Degree of static indeterminacy
The degree of static indeterminacy is the number by which a structure's unknown forces and reactions exceed the equilibrium equations available to solve them; zero means statically determinate.
Degree of substitution
Degree of substitution is a measure in carbohydrate chemistry of the average number of hydroxyl groups replaced per polysaccharide repeating unit, ranging from 0 to 3 for cellulose and starch.
Degree of unsaturation
The degree of unsaturation, also called the index of hydrogen deficiency or double bond equivalent, counts the total rings and π bonds in an organic molecule.
Degree spectrum
A degree spectrum is the set of Turing degrees that compute isomorphic copies of a mathematical structure, introduced by Linda Jean Richter in computable structure theory.
Degree symbol
The degree symbol (°), also called the degree sign, is a typographic mark after a numeral indicating degrees of temperature (30.2 °C) or plane angle (90°).
Degreed, Inc.
Degreed, Inc. is an American enterprise learning technology company founded in 2012 and headquartered in Pleasanton, California, best known for its learning experience platform that aggregates corporate learning content and ties it to skills data.
Degrees of Eastern Orthodox monasticism
The degrees of Eastern Orthodox monasticism are the ranks a monk or nun passes through: novice, riasa-bearer, small schema (stavrophore), and great schema, each marked by tonsure.
Degrees of freedom (mechanics)
In mechanics, the degrees of freedom of a system are the number of independent parameters needed to specify its configuration, with a free point particle having three.
Degrees of freedom (physics and chemistry)
A degree of freedom in physics and chemistry is one independent way a system can move, store energy, or vary, such as a molecule's translation, rotation, or vibration.
Degrees of freedom (statistics)
Degrees of freedom in statistics is the number of independent pieces of information available to estimate a quantity, typically the number of observations minus the number of estimated parameters.
Degrees of glory
Degrees of glory, or three degrees of glory, is the teaching of the Church of Jesus Christ of Latter-day Saints that nearly all people inherit one of three afterlife kingdoms.
Degron
Degron (degradation signal): a minimal protein element sufficient for recognition and degradation, chiefly by the ubiquitin-proteasome system. Includes N-degrons, phosphodegrons, cryptic degrons, and engineered tags like AID, dTAG, and ssrA.
Degrowth
Degrowth, or Décroissance, is a planned, democratic downscaling of production and consumption, concentrated in high-income economies, intended to reduce ecological impact and inequality while securing wellbeing.
Degtyaryov machine gun (Пулемёт Дегтярёва)
The Degtyaryov machine gun, also called the DP-27, is a Soviet light machine gun chambered for the 7.62×54mmR cartridge; adopted in 1927, it armed Red Army squads through World War II.
Deguang
Deguang (1121–1203) was a Chinese Chan Buddhist monk of the Southern Song dynasty, a dharma heir of Dahui Zonggao who led Lingyin, Jingshan, and Ayuwang and received the imperial title Chan Master Fozhao.
Degüello
Degüello (1979) is ZZ Top's sixth studio album and first for Warner Bros., produced by Bill Ham after a three-year hiatus. Singles "I Thank You" (No. 34) and "Cheap Sunglasses" (No. 89); platinum-selling bridge to El Loco and Eliminator.
Degumming
Degumming is a treatment of crude fats and oils with water, acid, or enzymes that removes phospholipids and other gum-forming impurities before storage, transport, or further refining.
Degussa P25
Degussa P25, now sold as AEROXIDE TiO₂ P 25 by Evonik, is a titanium dioxide nanopowder of mixed anatase and rutile used as the standard reference photocatalyst.
Deh Luran plain
The Deh Luran plain, also Dehloran, is an archaeological region in Khuzestan, southwestern Iran, near the town of Deh Luran, with villages from the 8th millennium BC.
Deh-i No/Sakavand
Deh-i No/Sakavand, also called Deh-e Now, is an archaeological site in Kermanshah province, western Iran, with four rock-cut tombs of the 4th to 3rd centuries B.C.E. near Bisotun.
Deha (TV series)
Deha (The Good & the Bad) is a Turkish action-drama series by Ay Yapım for Show TV, airing 22 September 2024 to 18 May 2025 in 31 episodes. Written by Damla Serim, directed by Umut Aral, starring Aras Bulut İynemli; it won the 2025 International Emmy for Telenovela.
Dehalococcoides
Dehalococcoides (Dhc), including Dehalococcoides mccartyi, formerly D. ethenogenes, are tiny anaerobic Chloroflexi bacteria that respire chlorinated pollutants like PCE and TCE via reductive dehalogenases, have ~1.4 Mb genomes, and require scavenged corrinoids.
Dehalogenation
Dehalogenation is any chemical reaction that removes halogen atoms such as chlorine, bromine, or iodine from a molecule, used in organic synthesis and environmental cleanup of chlorinated pollutants.
Dehalogenative cross-coupling
Dehalogenative cross-coupling is a class of metal-catalyzed reactions in which a halogen atom on an organic molecule acts as a removable handle, replaced by a new substituent to build more complex molecules.
Dehart Hubbard
DeHart Hubbard (William DeHart Hubbard, 1903-1976), American long jumper from Cincinnati who won gold at the 1924 Paris Olympics, the first Black athlete to win an individual Olympic gold, and set a 7.89 m long jump world record in 1925.
Dehas
Dehas is an ancient place cited as BAtlas 25 I2 Dehas in the Pleiades gazetteer, attested in Mauretania Caesariensis; the Dehás or Balkh river lies east of the Oxus.
Dehenna Davison
Dehenna Davison (born 1993) is a British Conservative former MP for Bishop Auckland (2019-2024) and Parliamentary Under Secretary of State at DLUHC (September 2022 to September 2023), later in not-for-profit work.
Dehhani
Dehhani (دهخانی), known as Hoca Dehhani, was a 14th-century Anatolian Turkish poet at the Karamanid court, regarded as the first secular classical poet of Anatolia.
Dehiwala-Mount Lavinia
Dehiwala-Mount Lavinia (දෙහිවල-ගල්කිස්ස) is a coastal municipality south of Colombo, Sri Lanka, a 2,109-hectare, 29-ward Municipal Council since 1959 with about 184,000 residents (2012 census).
Dehkhoda Dictionary
The Dehkhoda Dictionary (Loghat-nāme-ye Dehkhodā) is the largest comprehensive encyclopedic dictionary of the Persian language, compiled by Ali-Akbar Dehkhoda over more than sixty years and completed after his death by Mohammad Moin.