All articles starting with S
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Sylar
Sylar, born Gabriel Gray, is the main antagonist of the NBC superhero drama Heroes (2006–2010), played by Zachary Quinto, a serial killer who steals powers from people with superhuman abilities.
Syleena Johnson
Syleena Johnson (born 1976, Harvey, Illinois) is an American R&B/soul singer-songwriter, daughter of Syl Johnson; known for the Chapter albums, the Grammy-nominated 'All Falls Down' with Kanye West, Rebirth of Soul (2017), Woman (2020), and hosting Sister Circle.
Sylgard 184
Sylgard 184 is a two-part, 10:1 mix ratio, transparent silicone elastomer kit made by Dow that cures at room temperature and is widely used in electronics potting and microfluidics.
Sylhet (সিলেট)
Sylhet (সিলেট) is a city on the Surma River in northeastern Bangladesh, seat of Sylhet Division and Sylhet City Corporation (79.50 sq km, 42 wards, about 1 million people). Known for tea gardens and Shah Jalal's shrine, it faces severe waterlogging and rapid urban growth.
Sylhet District
Sylhet District (সিলেট জেলা), northeastern Bangladesh, capital of Sylhet Division; 3,452 sq km, 3.85 million people (2022), Surma River, tea plantations, largest gas reserves, severe floods.
Sylhet Division
Sylhet Division (সিলেট বিভাগ) is Bangladesh's sixth administrative division, declared 1 August 1995, in the northeast: four districts (Sylhet, Sunamganj, Moulvibazar, Habiganj), 11.03 million people (2022 census), haor wetlands, tea country, lowest income poverty but highest multidimensional poverty.
Sylhet Titans
Sylhet Titans (সিলেট টাইটান্স) are a cricket franchise representing Sylhet in the Bangladesh Premier League; owned by Cricket With Sami, they reached the playoffs in their debut 2025–26 season.
Sylheti language
Sylheti (ꠍꠤꠟꠐꠤ, Silôṭi) is an Eastern Indo-Aryan language of Sylhet Division, Bangladesh, and Assam's Barak Valley, with about 10 million speakers, its own Syloti Nagri script, disputed language-versus-dialect status, and a large UK diaspora.
Sylke Otto
Sylke Otto, German luger born 1969 in Chemnitz (Karl-Marx-Stadt), won Olympic women's singles gold at Salt Lake City 2002 and Turin 2006, four world titles, four overall World Cups, and a record 37 World Cup races.
Syllaba
Syllaba (English rules title Syllabus) is a 2024 children's board game by Urtis Šulinskas and Harris Tsagas, published by Board Game Box, in which syllable counts of spoken words move astronaut figures; it made the Kinderspiel des Jahres 2025 recommendation list.
Syllabary
Syllabary: a writing system where each character stands for a whole syllable, not decomposable into consonant and vowel, unlike abugidas and alphabets. Examples: Japanese kana, Cherokee (Sequoyah, 1821), Modern Yi, cuneiform.
Syllabic consonant
Syllabic consonant: a consonant, such as English /l r m n/ in button, bottle, rhythm, that serves as a syllable nucleus when an unstressed vowel like schwa is reduced or deleted; found across languages and in Proto-Indo-European sonorants.
Syllable
Syllable: a unit of speech with an obligatory vowel nucleus, optional onset and coda, forming the rhyme. Central to stress, syllable weight (mora count), phonotactics, and 5 Hz cortical speech tracking.
Syllabus
A syllabus (course syllabus, course outline) is an instructor-prepared document communicating course goals, schedule, assignments, assessment criteria, and policies, often legally required and increasingly shaped by accessibility, AI policy, and tone research.
Syllogism
Syllogism: a deductive argument with two premises and a conclusion, systematized by Aristotle in the Prior Analytics; also called sullogismos. Defined by categorical sentences, three figures, 24 traditionally valid moods, and medieval development by Buridan and Avicenna.
Sylmar Converter Station
The Sylmar Converter Station is the southern terminal of the Pacific DC Intertie, an 846-mile HVDC link from Oregon, operated by LADWP in Sylmar, Los Angeles, since 1970.
Sylow p-subgroup
A Sylow p-subgroup of a finite group G is a subgroup whose order is the largest power of a prime p dividing the order of G, named for Ludwig Sylow.
Sylow theorems
The Sylow theorems (Sylow's first theorem) are three results of finite group theory proved by Ludwig Sylow in 1872, guaranteeing Sylow p-subgroups for every prime power dividing a group's order.
Sylph
Sylph: an air elemental coined by Paracelsus in the 16th century alongside gnome, undine, and salamander; popularized by Le Comte de Gabalis (1670) and Pope's Rape of the Lock; also means a graceful, slender woman.
Sylph Chasma
Sylph Chasma is a 349-km-wide canyon on Ariel, Uranus's moon, IAU-approved in 1988 and named for British air spirits; the youngest of Ariel's chasmata, with a raised rim and inferred spreading-center medial grooves.
Sylt
Sylt is a North Sea barrier island in Schleswig-Holstein, Germany, up to 40 km long, famed for beaches, resorts, and the Sölring Frisian dialect. Its eroding west coast receives about 1.2 million m³ of nourishment sand yearly, 41.5 million m³ cumulatively from 1972 to 2011.
Sylvain Bemba
Sylvain Bemba (1934, Sibiti–1995, Paris) was a Congolese journalist, novelist, playwright, and musicologist, a dominant figure of intellectual life in Congo-Brazzaville for roughly forty years who wrote a pioneering study of Congolese popular music.
Sylvain Bouchard
Sylvain Bouchard (born 1970, Loretteville, Québec) is a Canadian long-track speed skating sprinter, not the FM93 radio host. Two-time Olympian (1994, 1998), twice 1,000 m world record holder, and 1998 Calgary 1,000 m world champion before retiring.
Sylvain Distin
Sylvain Distin (born 1977, Bagnolet, France) is a French former centre-back; PSG, Newcastle, Manchester City, Portsmouth, Everton, Bournemouth; record 469 Premier League appearances by a foreign outfield player; FA Cup 2008; never capped by France.
Sylvain Gigan
Sylvain Gigan is a physicist, Full Professor at Sorbonne Université since 2014 and Deputy Director of the Laboratoire Kastler Brossel in Paris, working on wavefront shaping and optical computing.
Sylvain Latour
Sylvain Latour is a French CNRS immunologist who directs a laboratory at Institut Imagine in Paris, known for identifying inborn errors of immunity to Epstein-Barr virus.
Sylvain Salnave
Sylvain Salnave (1827–1870) was a Haitian general who overthrew President Fabre Geffrard in 1867 and served as President of Haiti until 1869, when a civil war ended in his execution.
Sylvain Sylvain
Sylvain Sylvain (Sylvain Mizrahi, 1951–2021), Egyptian-born American guitarist and co-founder of proto-punk band the New York Dolls, whom he named; also solo artist (Sylvain Sylvain, Syl Sylvain and the Teardrops, (Sleep) Baby Doll) and member of the Batusis.
Sylvain Tesson
Sylvain Tesson (born 1972, Paris) is a French travel writer and adventurer, son of journalist Philippe Tesson; Prix Médicis 2011 for Dans les forêts de Sibérie, Prix Renaudot 2019 for La Panthère des neiges, known for his 2015 walk across France after a near-fatal fall.
Sylvain Wiltord
Sylvain Claude Wiltord (born 1974), French forward; 92 caps and 26 goals for France. Scored the stoppage-time equalizer in the Euro 2000 final; won league titles with Bordeaux, Arsenal (2002, 2004), and Lyon.