All articles starting with S
44,216 articles
Sideroblastic anemia
Sideroblastic anemia is a group of inherited and acquired anemias defined by ring sideroblasts, iron-loaded erythroblasts in the marrow, with causes ranging from ALAS2 mutations to myelodysplastic syndrome.
Siderophore
Siderophore: small (<1500 Da) iron-chelating molecules secreted by bacteria and fungi under iron limitation; also called sideromycins when antibiotic-conjugated. Fur-regulated NRPS or NIS biosynthesis; basis of cefiderocol Trojan horse antibiotics and plant growth promotion.
Siderosis
Siderosis, or welder's lung, is a benign, nonfibrotic pneumoconiosis caused by inhaling iron oxide from welding fume or iron and hematite mine dust; x-ray shadows mimic silicosis but lung function is usually preserved.
Siders case
The Siders case is the 2026 Vinton County, Ohio prosecution of Gary Siders Jr., Elizabeth Siders, Gary Siders Sr., and Christina Siders after 16 children were found in squalid Hamden home; endangerment and sexual-abuse indictments, competency findings, and prior welfare contact.
Siderurgia Nacional
Siderurgia Nacional is Portugal's national steel company, founded in 1954, nationalized in 1975, and privatized in the 1990s; its successors, SN Seixal and SN Maia, now belong to Spain's Megasa.
Sidesaddle
Sidesaddle: a saddle for riding with both legs on one side of the horse, used by European women from about 1400, taking its modern form in the 1830s, declining by the 1930s, and revived by bodies such as the Side Saddle Association (1974).
Sideshow
A sideshow is a secondary attraction beside a circus or carnival, from "outside shows" (1850s), featuring ten-in-one freak shows (1904 CNE), working acts, and now performance art; Barnum's Joice Heth (1835) is its landmark case.
Sideshow Bob
Sideshow Bob, Robert Underdunk Terwilliger, is The Simpsons' erudite recurring villain, voiced by Kelsey Grammer since 1990's "Krusty Gets Busted"; a former Krusty sidekick defined by his obsession with killing Bart, the "Cape Feare" rake gag, and Gilbert and Sullivan.
Sideshows (car culture)
A sideshow, also called a street takeover, is an unsanctioned gathering begun in 1980s Oakland, California, where drivers block intersections and perform stunts like donuts and burnouts.
Sidetalk
Sidetalk (@sidetalknyc), also called Sidetalk NYC, is a one-minute man-on-the-street comedy show in New York created by Trent Simonian and Jack Byrne at NYU in 2019, known for the viral 2021 "Bing Bong" Knicks video.
Sidetone
Sidetone is a telephone user's own speech and nearby room noise, heard in the user's own earpiece; too much or too little makes talkers speak too softly or too loudly.
Sidetrack
A sidetrack is a secondary wellbore drilled away from an original wellbore, either deliberately, as to bypass an irretrievable fish or collapsed casing, or accidentally when the drill string strays.
Sidewalk chalk
Sidewalk chalk, also called street chalk or pavement chalk, is large calcium-carbonate chalk for temporary drawing on concrete. Used for children's play, hopscotch, and street art; National Toy Hall of Fame 2020.
Sidewalk Infrastructure Partners
Sidewalk Infrastructure Partners is a Brooklyn-based investment and development company, launched in 2019 by Alphabet and the Ontario Teachers' Pension Plan to invest in technology-enabled infrastructure projects and companies.
Sideways
Sideways is a 2004 American comedy-drama directed by Alexander Payne, adapted from Rex Pickett's novel, following Paul Giamatti and Thomas Haden Church on a road trip through Santa Barbara wine country.
Sidewheeler
A sidewheeler is a steam-powered vessel with two paddle wheels, one on each side of the hull; it was generally faster and more maneuverable than the sternwheeler.
Sidewinder (robot)
Sidewinder is a modular snake robot from Carnegie Mellon University that in 2014 became the first limbless robot to climb sandy slopes by copying sidewinder rattlesnakes.
Sidewinding
Sidewinding is a mode of snake locomotion in which the animal moves sideways across loose sand or mud, best known in desert vipers like the sidewinder rattlesnake.
Sidhant Keshwani
Sidhant Keshwani is an Indian entrepreneur who founded Libas, a fast-fashion Indian ethnic-wear brand, and grew it past a ₹1,000 crore annual run rate by 2026.
Sidharth Bharathan
Sidharth Bharathan (സിദ്ധാർത്ഥ് ഭരതൻ) is a Malayalam film actor and director, son of director Bharathan and actor KPAC Lalitha, who debuted as a filmmaker with Nidra in 2012.
Sidharth Malhotra
Sidharth Malhotra (सिद्धार्थ मल्होत्रा), born 1985 in Delhi, is a Hindi-film actor and former model who debuted in Student of the Year (2012) and is known for Kapoor & Sons and Shershaah.
Sidharth Shukla (सिद्धार्थ शुक्ला)
Sidharth Shukla (सिद्धार्थ शुक्ला), 1980–2021, Indian model and actor; Shivraj Shekhar in Balika Vadhu, winner of Khatron Ke Khiladi 7 and Bigg Boss 13; died of a heart attack in Mumbai at 40.
Sidhu Moose Wala (ਸ਼ੁਭਦੀਪ ਸਿੰਘ ਸਿੱਧੂ)
Sidhu Moose Wala (ਸ਼ੁਭਦੀਪ ਸਿੰਘ ਸਿੱਧੂ), born Shubhdeep Singh Sidhu, was a Punjabi rapper, singer, and Congress politician from Moosa, Mansa, killed 29 May 2022; known for So High, PBX 1, Moosetape, 295, and posthumous releases.
Sidhu Murmu
Sidhu Murmu (সিধু মুর্মু) was a Santhal leader who, with his brothers Kanhu, Chand, and Bhairav, led the 1855 Santhal Hul uprising against British colonial rule in present-day Jharkhand.
Sidi Abderrahman al-Majdub
Sidi Abderrahman al-Majdub is a Moroccan play by Tayeb Saddiki, first performed in the mid-1960s, built on the life and verse of a 16th-century Sufi folk poet.
Sidi al-Mukhtar al-Kunti
Sidi al-Mukhtar al-Kunti (سيدي المختار الكنتي) was a Kunta Sufi shaykh of the Azawad in Mali who led the Qadiriyya from 1756 until his death in 1811.
Sidi Bel Abbes
Sidi Bel Abbes (سيدي بلعباس), city and wilaya capital in northwestern Algeria on the Mekerra river; founded 1843 as a French military redoubt, Foreign Legion headquarters until 1962; urban population about 229,000 in 2020.
Sidi Bel Abbès Province
Sidi Bel Abbès Province (Wilaya de Sidi Bel Abbès), northwestern Algeria: capital Sidi Bel Abbès on the oued Mekerra; 15 daïras, 52 communes, about 9,150 km², roughly 772,000–785,000 people, semi-arid cereal-farming and electronics (ENIE) economy.
Sidi Bennour
Sidi Bennour (سيدي بنور) is a city in western Morocco, the administrative center of Sidi Bennour Province, lying in the Doukkala plain about 120 km northwest of Marrakech.
Sidi Chen
Sidi Chen is a geneticist and Associate Professor at Yale School of Medicine known for genome-wide CRISPR screens in living animals that uncover cancer immunotherapy targets.