All articles starting with S
44,216 articles
Sudanic Congo - Oubangi
Sudanic Congo - Oubangi (FEOW ID 535) is an Afrotropic freshwater ecoregion covering the Ubangi basin except the Uele, plus the Congo mainstem to Malebo Pool, with fauna transitional between Nilo-Sudanian and Congolian.
Sudano-Sahelian architecture
Sudano-Sahelian architecture, also called Sahelian architecture, is the indigenous earthen building tradition of West Africa's Sahel and savanna, marked by mud-brick walls, projecting toron beams, and landmark mosques at Djenné and Timbuktu in Mali.
Sudanta
Sudanta (सुदन्त, also Sudatta) was a minor arahant of the Theravada commentarial tradition, a contemporary of the Buddha known almost entirely through one verse, Theragatha 37.
Sudarsana Curna
Sudarsana Curna (Sudarshana churna) is a polyherbal Ayurvedic powder for fever, from Bhaishajyaratnavali, with Swertia chirata or Andrographis paniculata as chief ingredient; safety and COVID-19 trials exist.
Sudarshan Kriya
Sudarshan Kriya (SKY) is a rhythmic cyclical breathing technique of slow, medium, and fast breath cycles, created in 1982 by Sri Sri Ravi Shankar and taught by the Art of Living Foundation, studied for anxiety, depression, and PTSD.
Sudarshan Shetty
Sudarshan Shetty, born 1961 in Mangalore, is a contemporary Indian artist based in Mumbai known for large-scale, often mechanically animated sculptural installations built from everyday objects and reclaimed wood.
Sudarshan Venu
Sudarshan Venu is an Indian business heir, son of Venu Srinivasan, who became Chairman and Managing Director of TVS Motor Company, the world's third-largest two-wheeler maker, in 2025.
Sudarshana Chakra (सुदर्शन चक्र)
The Sudarshana Chakra (सुदर्शन चक्र) is the discus of the Hindu god Vishnu, a fiery weapon that returns when thrown and is also worshipped as a deity.
Sudās
Sudās (सुदास) was a king of the Bharata tribe who won the Battle of the Ten Kings on the Parushni (Ravi) river, establishing Bharata pre-eminence in the region.
Südburg inscription
The Südburg inscription is a six-line Hieroglyphic Luwian royal text carved in a chamber at Boğazköy-Ḫattuša, attributed to King Šuppiluliuma, probably Šuppiluliuma II, in the late 13th century BC.
Sudbury Basin
The Sudbury Basin is an elliptical geological basin in Ontario, Canada, created by a giant meteorite impact 1.85 billion years ago, hosting major Ni-Cu-PGE sulfide deposits.
Sudbury impact event
The Sudbury impact event was a chondritic asteroid collision in what is now Ontario, Canada, about 1.85 billion years ago, leaving one of Earth's three largest known impact structures.
Sudbury Neutrino Observatory
The Sudbury Neutrino Observatory (SNO) was a heavy-water neutrino detector 2 km underground in Ontario that operated from 1999 to 2006 and solved the solar neutrino problem.
Sudbury Wolves
Sudbury Wolves, Ontario Hockey League major junior team in Sudbury, Ontario, since 1972 (from the Niagara Falls Flyers franchise); plays at Sudbury Community Arena, owned by Dario Zulich's SWSE, never won an OHL title, moving to a new downtown Event Centre in 2028.
Sudd
The Sudd is Africa's largest wetland, a White Nile floodplain swamp in South Sudan covering about 57,000 km2, a 2006 Ramsar site famed for shoebill and antelope migrations and threatened by the unfinished Jonglei Canal.
Sudden approximation
The sudden approximation is a quantum mechanics method for a Hamiltonian changing much faster than the system's timescales, so the state stays frozen during the switch.
Sudden arrhythmic death syndrome
Sudden arrhythmic death syndrome (SADS), also called autopsy-negative sudden unexplained death, is sudden cardiac death with a structurally normal heart and negative toxicology; family screening yields about 12% and molecular autopsy about 11%.
Sudden cardiac death in hypertrophic cardiomyopathy
Sudden cardiac death in hypertrophic cardiomyopathy is the leading cause of death in HCM; risk scores such as HCM Risk-SCD estimate five-year risk to guide implantable cardioverter-defibrillator decisions.
Sudden cardiac death of athletes
Sudden cardiac death of athletes: unexpected cardiac death during sport, the leading medical cause of athlete death. Incidence 0.24-6.8 per 100,000 person-years; causes differ by age; screening and AED-based prevention debated.
Sudden Death (1995 film)
Sudden Death is a 1995 American action thriller directed by Peter Hyams, starring Jean-Claude Van Damme as a firefighter battling terrorists at a hockey game.
Sudden death (sport)
Sudden death (sport): tie-break format where the first score in an extra period wins. Used in NFL overtime (now modified), IIHF playoff hockey, and the sudden death phase of soccer penalty shootouts.
Sudden idiopathic hearing loss
Sudden idiopathic hearing loss (SIHL, ICD-11 AB55; also idiopathic sudden sensorineural hearing loss, 突聋) is unexplained inner-ear hearing loss developing within 72 hours, usually unilateral, treated urgently with corticosteroids.
Sudden Impact
Sudden Impact is a 1983 American action thriller directed by and starring Clint Eastwood, the fourth of the five Dirty Harry films, introducing "Go ahead, make my day."
Sudden infant death-dysgenesis of the testes syndrome
Sudden infant death-dysgenesis of the testes syndrome (SIDDT), also called TSPYL1-related syndrome, is a lethal autosomal recessive disorder of infants with testicular dysgenesis in 46,XY males, staccato cry, autonomic dysfunction, and death before 12 months from cardiorespiratory arrest; described mainly in Old Order Amish families.
Sudden sensorineural hearing loss
Sudden sensorineural hearing loss (SSNHL, sudden deafness): rapid ≥30 dB inner-ear hearing loss over 3 frequencies within 3 days, usually unilateral, 90% idiopathic, an ENT emergency treated with corticosteroids.
Sudden Shower over Shin-Ōhashi Bridge and Atake
Sudden Shower over Shin-Ōhashi Bridge and Atake (Ōhashi Atake no Yūdachi) is an 1857 Hiroshige woodblock print showing pedestrians crossing a bridge over the Sumida River in a downpour.
Sudden stratospheric warming
A sudden stratospheric warming is a rapid temperature rise of up to 50 °C in the winter polar stratosphere that reverses the polar winds and disrupts surface weather.
Sudden unexpected death in epilepsy
SUDEP (sudden unexpected death in epilepsy) is a sudden, non-traumatic, non-drowning death in epilepsy excluding status epilepticus. Key facts: 1.2/1,000 patient-years in adults, GTCS frequency as dominant risk factor, respiratory-cardiac arrest mechanism.
Suddenly (1954 film)
Suddenly (1954) is a Lewis Allen film noir thriller starring Frank Sinatra as assassin John Baron, who takes a California family hostage to shoot the President; based on Richard Sale's story "Active Duty," later withdrawn after the JFK assassination.
Suddenly Susan
Suddenly Susan, NBC sitcom 1996–2000, 93 episodes, starring Brooke Shields as Susan Keane, a single columnist at San Francisco magazine The Gate alongside Judd Nelson and Kathy Griffin.