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Solitary fibrous tumor
Solitary fibrous tumor (SFT), formerly called hemangiopericytoma, is a rare fibroblastic mesenchymal neoplasm with staghorn vessels and the pathognomonic NAB2-STAT6 fusion on 12q13, diagnosed by STAT6 and CD34 immunohistochemistry.
Solitary necrotic nodule of the liver
Solitary necrotic nodule of the liver (SNNL) is a rare benign liver lesion with an entirely necrotic, often calcified core in a fibrous capsule, first described in 1983.
Solitary nucleus
Solitary nucleus (nucleus tractus solitarii, NTS): dorsomedial medulla gray matter receiving visceral and taste afferents via cranial nerves VII, IX, X; first relay for baroreflex, respiration, and gut reflexes, using glutamatergic vagal input.
Solitary rectal ulcer syndrome
Solitary rectal ulcer syndrome (SRUS), also called solitary ulcer of the rectum, is a rare benign rectal disorder from mucosal prolapse and ischemia, causing bleeding, mucus, and straining; treated with biofeedback, medication, or surgery.
Solitary waves in granular chains
Solitary waves in granular chains are localized pulses of compressive force along elastic particle arrays. They propagate without changing shape due to the nonlinear Hertz contact law.
Solithromycin
Solithromycin (CEM-101, T-4288) is a fluoroketolide, fourth-generation macrolide antibiotic with three ribosomal binding sites, developed for pneumonia and gonorrhea; US and EU development halted in 2016-2017 over liver-safety concerns, with an NDA filed in Japan.
Soliton
A soliton, or soliton wave, is a localized wave pulse that keeps its shape and emerges from collisions with other solitons unchanged, behaving like a particle.
Soliton (optics)
An optical soliton is a pulse of light that propagates through an optical fiber without changing shape, because dispersion and the Kerr nonlinearity exactly compensate each other.
Soliton microcomb
A temporal soliton microcomb is an optical frequency comb from a micrometer-scale resonator, where soliton light pulses circulate indefinitely, bringing frequency-comb metrology to compact, low-power photonic devices.
Solitude
Solitude is chosen, voluntary aloneness, distinct from loneliness, the negative dissatisfaction with one's social life. Covers its definition, historical and cultural meanings, psychological well-being effects, and how enforced isolation differs from chosen solitude.
Solitudo
Solitudo: extinct genus of large insular Mediterranean tortoises (Testudinidae) named by Valenti et al. 2022, defined by distinctive femur anatomy; species robusta (Malta), gymnesica (Menorca), sicula (Sicily).
Soliva
Soliva Ruiz & Pav. (burrweed, onehunga weed) is a small Asteraceae genus in tribe Anthemideae, native Mexico to South America, with about 6 species; Soliva sessilis is a spiny-fruited lawn burweed naturalized worldwide.
Solketal
Solketal, 2,2-dimethyl-1,3-dioxolane-4-methanol (C₆H₁₂O₃), is a cyclic ketal of glycerol and acetone produced from biodiesel by-product glycerol and used as a gasoline octane booster and green solvent in pharmaceuticals, agrochemicals, and coatings.
Sollenau
1. SC Sollenau (1. Sport Club Sollenau) is an Austrian football club from Sollenau, Lower Austria, founded 1920, playing at Sportplatz Sollenau (2,000). Known for a 1:10 cup loss to RB Salzburg in 2014 and six Regionalliga Ost seasons (2010-2016); now in 2. Klasse Triestingtal.
Sollentuna
Sollentuna, a municipality in Stockholm County, Sweden, north of Stockholm city, seat Tureberg. 78,033 inhabitants at the turn of 2025/2026; railway since 1866; ranked 14th of 290 in Fokus 2026 quality-of-life survey.
Sollion
Sollion (Σόλλιον, Latinized Sollium), Corinthian colony and harbor town in Acarnania, western Greece; captured by Athens in 431 BCE and given to Palairos; site unlocated, probably on the Plagia peninsula.
Sollipulli
Sollipulli, a 2,282 m stratovolcano in Chile's Andean Southern Volcanic Zone between Llaima and Villarrica, holds a 4-km glacier-filled caldera of non-explosive origin, a VEI 5 Alpehué Plinian eruption about 2,900 years ago, and a rapidly thinning caldera glacier.
Solly March
Solly March (Solomon Benjamin March, born 1994, Eastbourne) is an English left-footed winger and wing-back who made 300 Brighton & Hove Albion appearances from 2011 to 2026, won 2017 promotion, starred under De Zerbi, and was released in June 2026 after repeated ACL injuries.
Solnhofen Limestone
Solnhofener Plattenkalk (Solnhofen Limestone): Upper Jurassic, Tithonian fine-grained platy limestone of Bavaria, Germany, a world-famous fossil Lagerstätte with over 700 species, all twelve Archaeopteryx specimens, and the classic lithographic printing stone.
Solntsevskaya Bratva (Солнцевская братва)
The Solntsevskaya Bratva, or Solntsevo Brotherhood, is a Russian organized crime group formed in the 1980s in Moscow's Solntsevo district, led by Sergei Mikhailov and Viktor Averin.
Solntsevsky Coal Mine
The Solntsevsky Coal Mine (Солнцевский угольный разрез) is an open-pit brown coal mine in southwestern Sakhalin, Russia, and the largest coal operation of the East Mining Company.
Solo (2017 film)
Solo (2017, Malayalam സോളോ) is Bejoy Nambiar's Tamil-Malayalam bilingual anthology starring Dulquer Salmaan in four roles tied to earth, water, fire, and wind; released October 5, 2017, withdrawn in Tamil Nadu after a day, with an altered Malayalam climax.
SOLO 1 trial (NCT02277743)
SOLO 1 (NCT02277743, LIBERTY AD SOLO 1, Regeneron R668-AD-1334) was a phase 3 trial of dupilumab monotherapy in 671 adults with moderate-to-severe atopic dermatitis, showing 37-38% vs 10% IGA 0/1 response at week 16.
SOLO 2 trial
The SOLO 2 trial, or LIBERTY AD SOLO 2, was a phase 3 study of 708 adults showing dupilumab monotherapy effective for moderate-to-severe atopic dermatitis.
Solo Boy
Solo Boy (సోలో బాయ్) is a 2025 Telugu romantic drama directed by P. Naveen Kumar, starring Bigg Boss fame Gautham Krishna as Krishnamurthy, released 4 July 2025, streaming on Aha and JioHotstar.
Sólo con Tu Pareja
Sólo con tu pareja (Love in the Time of Hysteria) is Alfonso Cuarón's 1991 Mexican comedy debut, written with Carlos Cuarón and shot by Emmanuel Lubezki, about a yuppie womanizer tricked into believing he has AIDS.
Solo Leveling (나 혼자만 레벨업)
Solo Leveling (나 혼자만 레벨업, I Alone Level Up) is a Korean web novel by Chugong about E-rank hunter Sung Jinwoo, whose private game System lets him level up; its Redice Studio webtoon spawned an anime, Netmarble's Arise game, and 25-language licensing.
Solo Leveling season 1
Solo Leveling season 1 (나 혼자만 레벨업, 俺だけレベルアップな件) is A-1 Pictures' 12-episode January 2024 anime adapting Chugong's Korean web novel; directed by Shunsuke Nakashige, it follows E-rank hunter Sung Jinwoo, the only person who can level up, and earned 100% on Rotten Tomatoes.
Solo Mio
Solo Mio is a 2026 Angel Studios romantic comedy directed by Charles and Daniel Kinnane, starring Kevin James as Matt Taylor, an art teacher left at the altar in Rome who takes his honeymoon alone; 82% on Rotten Tomatoes, A- CinemaScore, $26.4M worldwide.
Solo papaya
The Solo papaya is a group of small, pear-shaped papaya cultivars originating in Hawaii in the early twentieth century, grown almost entirely from self-pollinating hermaphrodite plants.