All articles starting with S
44,216 articles
Synesius
Synesius (Συνέσιος; c. 370 – c. 413) was a Greek Neoplatonic philosopher and aristocrat from Cyrene, Libya, who became bishop of Ptolemais and wrote letters, hymns, and treatises.
Synesthesia
Synesthesia is a neurological trait in which one stimulus (the inducer) involuntarily triggers another sensation (the concurrent), such as colored letters. It affects about 4% of people, runs in families, was first described by Sachs in 1812, and is diagnosed by consistency testing.
Synestia (band)
Synestia is an American symphonic deathcore band founded in 2020 by Sam Melchior, originally a US–Finland remote project with vocalist Ville Hokkanen, now based in Minneapolis/Raleigh. Releases: Maleficium (2022), The Poetic Edda EP with Disembodied Tyrant (2024), Premonitions EP (2025); independent and active.
Synflorix
Synflorix (PCV10, PHiD-CV) is GSK's 10-valent pneumococcal conjugate vaccine for children 6 weeks to 5 years, covering serotypes 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F, 23F; EU-authorized 2009, WHO-prequalified 2009-2010, used mainly in emerging countries.
Syngamosis
Syngamosis is a parasitic disease of birds, and occasionally mammals and humans, caused by gapeworms in the upper respiratory tract, causing gasping, coughing, and breathing difficulty.
SYNGAP1-related developmental and epileptic encephalopathy
SYNGAP1-related developmental and epileptic encephalopathy (SYNGAP1-DEE), also called SYNGAP1-related intellectual disability, is a rare genetic disorder causing developmental delay, epilepsy, and autism, usually with seizures beginning around age 2.
Syngas
Syngas, or synthesis gas, is a gas of hydrogen and carbon monoxide made from coal, biomass, or natural gas and used to produce fuels and chemicals.
Syngas fermentation
Syngas fermentation is a bioprocess in which anaerobic acetogenic bacteria convert the carbon monoxide, hydrogen, and carbon dioxide of synthesis gas into ethanol and other chemicals.
Syngenta
Syngenta is a Swiss agricultural technology company headquartered in Basel, formed in 2000 from Novartis and AstraZeneca's agribusinesses and acquired by ChemChina in 2017 for $43 billion.
Syngman Rhee (이승만)
Syngman Rhee (이승만, Unam), 1875–1965, first president of South Korea 1948–1960 and Provisional Government president from 1919; Princeton PhD, Korean War leader, resigned in the April Revolution of 1960 and died in Honolulu.
Syngman Rhee's release of anti-communist POWs
Syngman Rhee's release of anti-communist POWs (반공포로 석방) was South Korea's unilateral release of about 27,000 North Korean prisoners who refused repatriation, ordered by Rhee in June 1953.
Syngnathidae
Syngnathidae, the seahorse, pipefish, pipehorse, and seadragon family of Syngnathiformes ray-finned fishes, is defined by fused tubular jaws, bony-ring bodies, and male pregnancy in a brood pouch that functions like a placenta.
Syngonium podophyllum
Syngonium podophyllum (arrowhead vine, American evergreen) is a climbing Araceae liana native from Mexico to tropical America, grown as a houseplant, toxic from calcium oxalate crystals, and a Category I invasive in Florida.
Synk: Aexis Line
Synk: Aexis Line (SYNK : aeXIS LINE) is aespa's third concert tour, opening August 29-31, 2025 at Seoul's KSPO Dome with 30,000 attendees, then Japan and Asia, ending at Tokyo Dome in April 2026.
Synk: Complaexity
SYNK : COMPLæXITY is the fourth world tour by K-pop group aespa (에스파), supporting the 2026 album Lemonade; it opened August 7-8, 2026 at Gocheok Sky Dome, Seoul, and ran 26 dates through February 2027.
Synk: Parallel Line
Synk: Parallel Line (싱크 : 패러렐 라인) is aespa's second world tour, running June 2024 to March 2025 across Asia, Australia, North America, and Europe, ending with a KSPO Dome encore; distinct from Synk: Hyper Line and aeXIS LINE.
Synnovation Therapeutics
Synnovation Therapeutics is a precision-oncology biotechnology company founded in 2021 in Wilmington, Delaware by former Incyte chemists, which in 2026 agreed to sell its PI3Kα inhibitor program to Novartis for up to $3 billion.
Synnøve Macody Lund
Synnøve Macody Lund (born 1976, Stord, Norway) is a Norwegian actress, author, and former film critic. Known for Diana Brown in Headhunters (2011), Ran Jutul in Ragnarok (2020–2023), Gabriella Grane in The Girl in the Spider's Web, and Cecilia Pederson in Saw X (2023).
Synod
A synod is a formal assembly of church representatives, classically bishops, convened to deliberate on doctrine, discipline, or administration; the word comes from the Greek synodos, "walking together."
Synod of Dadisho
The Synod of Dadisho (ܣܘܢܗܕܐ ܕܡܪܝ ܕܕܝܫܘܥ) was a Church of the East council held at Markabta of the Arabs in 424, restoring Dadisho as catholicus.
Synod of Elvira
The Synod of Elvira, also called the Council of Elvira (Latin Illiberis), was an early fourth-century church council near modern Granada, Spain, the first known council held in Spain.
Synodic period
The synodic period is the time a solar system body takes to return to the same position relative to the Sun as seen from Earth, differing from the sidereal period.
Synodicon of Tsar Boril
The Synodicon of Tsar Boril (Синодик на цар Борил) is a Middle Bulgarian church text compiled for Tsar Boril's 1211 council against the Bogomil heresy.
Synoeca septentrionalis
Synoeca septentrionalis, a warrior wasp of the Neotropical swarm-founding genus Synoeca, ranges from Mexico to northwestern South America and the Brazilian Atlantic Forest; drumming defense, level-4 sting, multi-queen colonies.
Synonym
Synonym, from Greek synōnymos 'of like name', is a word or expression with the same or very similar meaning as another; synonymy is tested by substitution, holds between senses, and is rarely absolute.
Synonym (taxonomy)
A synonym in taxonomy, also called a taxonomic or nomenclatural synonym, is a scientific name no longer considered correct for a taxon, replaced by another name.
SYNOP
SYNOP, or surface synoptic observations, is the World Meteorological Organization code for reporting surface weather from land stations, exchanged worldwide to build a synoptic picture for forecasting.
Synopsys
Synopsys, Inc. is an American software company headquartered in Sunnyvale, California, founded in 1986, supplying electronic design automation software, semiconductor IP, and, since 2025, Ansys simulation software.
Synopsys Design Compiler
Synopsys Design Compiler is Synopsys' logic synthesis tool that converts RTL hardware descriptions in Verilog, SystemVerilog, or VHDL into gate-level netlists, optimizing timing, area, power, and test.
Synopsys HSPICE
Synopsys HSPICE is a commercial SPICE circuit simulator, originally commercialized by Meta-Software in the 1980s and now sold by Synopsys as PrimeSim HSPICE, predicting integrated circuit behavior before manufacturing.