All articles starting with D
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Defenestration
Defenestration, from Latin fenestra (window), is throwing a person out of a window. Best known through the Prague defenestrations of 1419, 1483, and 1618, the last triggering the Thirty Years War.
Defenestration of Prague
The Defenestration of Prague (Pražská defenestrace) was the throwing of two Habsburg governors and their secretary from Prague Castle on 23 May 1618, opening the Thirty Years' War.
Defenestrations of Prague
Pražské defenestrace: three Bohemian episodes (1419, 1483, 1618) of throwing opponents from windows; the 1618 Prague Castle defenestration of regents Slavata and Martinic triggered the Bohemian Revolt and the Thirty Years' War.
Defeng Tech
Defeng Tech (德风科技), legally Beijing Defeng Xinzhengcheng Technology Co., Ltd., is a Beijing industrial internet and AIoT software company founded in 2015 that filed for a Hong Kong listing in 2025.
Defensa y Justicia
Defensa y Justicia (El Halcón), Argentine club from Florencio Varela founded 1935; promoted to Primera in 2014, Copa Sudamericana 2020 and Recopa 2021 winner; distinct from namesakes.
Defense Acquisition Program Administration
The Defense Acquisition Program Administration (방위사업청, DAPA) is South Korea's central defense procurement agency, established on January 1, 2006, under the Ministry of National Defense.
Defense Acquisition University
Defense Acquisition University (DAU), established by DAWIA in 1990 under 10 U.S.C. 1746, is the Department of Defense's training institution for the acquisition workforce, providing certification courses, online learning, and acquisition policy research.
Defense in depth
Defense in depth is a security strategy that layers multiple independent safeguards so a system stays protected when one control fails, increasing attacker work factor and detection likelihood.
Defense Intelligence Agency
Defense Intelligence Agency (DIA), a DOD combat support agency, is the primary U.S. producer of foreign military intelligence for the secretary of defense, Joint Chiefs, and combatant commands, distinct from the CIA's presidential focus.
Defense Language Institute
The Defense Language Institute Foreign Language Center, formerly the Army Language School, is the U.S. Defense Department's primary foreign language school at the Presidio of Monterey, California, founded in 1941.
Defense Meritorious Service Medal
Defense Meritorious Service Medal (DMSM), a U.S. Defense joint decoration established by Executive Order 12019 on November 3, 1977, awarded by the Secretary of Defense for non-combat meritorious service in joint assignments, ranking above the Meritorious Service Medal.
Defense Meteorological Satellite Program
The Defense Meteorological Satellite Program (DMSP) is a United States military series of polar-orbiting weather satellites that has supported Department of Defense operations since 1962.
Defense of Beijing
The Defense of Beijing, also called the Defense of the Ming Capital, was the Ming dynasty's successful 1449 defense of its capital against a Wala invasion, led by Yu Qian.
Defense of Kozelsk
The Defense of Kozelsk (Оборона Козельска) was a 1238 siege in which the town of Kozelsk resisted Batu Khan's Mongol army for about two months.
Defense of Marriage Act
Defense of Marriage Act (DOMA), 1996 U.S. federal law, P.L. 104-199, defining marriage for federal purposes as one man and one woman; Section 3 struck down by United States v. Windsor (2013) and repealed by the Respect for Marriage Act (2022).
Defense of the Ancients
Defense of the Ancients (DotA) is a 2003 Warcraft III custom map by Eul, expanded by Guinsoo and IceFrog, that defined the MOBA genre and led to Valve's Dota 2.
Defense of the Brest Fortress
The Defense of the Brest Fortress (Оборона Брестской крепости) was the Red Army's month-long resistance to the German assault opening the invasion of the Soviet Union on 22 June 1941.
Defense of the Great Wall
The Defense of the Great Wall (长城抗战) was a series of 1933 battles between the Chinese Nationalist army and the Japanese Kwantung Army at the Great Wall passes.
Defense of the Sihang Warehouse
The Defense of the Sihang Warehouse (四行仓库保卫战) was a 1937 stand by about 420 Chinese soldiers, the "Eight Hundred Heroes", against Japanese forces in Shanghai.
Defense Security Cooperation Agency
The Defense Security Cooperation Agency (DSCA) is a U.S. Department of Defense agency that administers Foreign Military Sales and builds the capacity of foreign security forces.
Defense Superior Service Medal
Defense Superior Service Medal (DSSM), US joint decoration established by Executive Order 11904 on February 6, 1976. Awarded by the Secretary of Defense for superior meritorious joint duty, ranking before the Legion of Merit.
Defense Support Program
The Defense Support Program is an American satellite constellation using infrared sensors in geosynchronous orbit to give early warning of ballistic missile launches, first launched in 1970.
Defense Threat Reduction Agency
The Defense Threat Reduction Agency (DTRA) is a US Department of Defense agency, established in 1998 to counter weapons of mass destruction, and runs the Nunn-Lugar Cooperative Threat Reduction program.
Defenses to 1NT openings
Defenses to 1NT openings are bridge bidding conventions, including Cappelletti, Landy, DONT, Meckwell, and CRASH, that replace natural overcalls after an opponent opens one notrump.
Defenses to divorce
Defenses to divorce: connivance, collusion, condonation, and recrimination, the classic bars a spouse could raise against a fault-based divorce petition, their origins, and their abolition under no-fault divorce.
Defensible space
Defensible space is a model of crime prevention through urban design, introduced by architect Oscar Newman in his 1972 book Defensible Space: Crime Prevention Through Urban Design.
Defensin-like
Defensin-like (DEFL/DLP) proteins: small cysteine-rich, cationic peptides sharing the defensin fold, split into cis- and trans-defensin superfamilies of independent origin; functions span antimicrobial activity, fertilization signaling, ion channel toxins, and enzyme inhibition.
Defensin-like peptide
Defensin-like peptide (DLP): small disulfide-rich peptides structurally resembling defensins but outside the alpha, beta, and theta subfamilies; prototypes DLP-1 and DLP-2 from platypus venom (PDB 1B8W, 1D6B), InterPro IPR012553, Pfam PF08131; also insect and plant peptides such as DLP4.
Defensin-like protein
Defensin-like proteins (DEFLs, InterPro IPR010851) are plant cysteine-rich proteins resembling defensins; several hundred genes per genome, over 300 in Arabidopsis, with roles in immunity and pollen-pistil signaling.
Defensins
Defensins are small cationic antimicrobial peptides of innate immunity, defined by six cysteines and three disulfide bonds; human alpha- and beta-defensins come from neutrophils, epithelial, and Paneth cells, while theta-defensins are pseudogenes in humans.