All articles A–Z
519,064 articles
Strikeforce (mixed martial arts)
Strikeforce: American MMA promotion founded by Scott Coker in 1992 as a kickboxing brand, converted to MMA in 2006, became the No. 2 U.S. promotion, bought by Zuffa in March 2011, and closed after its final show on January 12, 2013.
Strikeout
Strikeout (SO, K): baseball out recorded on three strikes; called strike added 1858, four-strike year 1887, uncaught third strike lets batter run; MLB K rate 11.4% (1955) to 22.2% (2025).
Striker (band)
Striker is a Canadian heavy metal band from Edmonton, Alberta, formed in 2007. It won a Juno Award in 2020 for its album Play to Win.
Striker Venture Partners
Striker Venture Partners is a San Francisco venture capital firm founded in 2025 by former CRV partners, investing $5–30 million in pre-revenue AI and cybersecurity startups.
Striking clock
A striking clock is a mechanical clock that automatically sounds a bell, gong, or chime to count the hours, using a separate gear train from the timekeeping one.
Striking Distance
Striking Distance is a 1993 American action thriller directed by Rowdy Herrington, starring Bruce Willis as a Pittsburgh detective demoted to river patrol, with Sarah Jessica Parker in a supporting role.
Striking the colors
Striking the colors, also striking the flag, is a warship's lowering of its national ensign to signal surrender, legally dated from the moment of lowering; distinct from a white flag of truce at sea.
Striking Vipers
Striking Vipers is the Black Mirror season 5 premiere, written by Charlie Brooker and directed by Owen Harris, released June 5, 2019. Anthony Mackie and Yahya Abdul-Mateen II play friends whose VR fighting-game avatars, Lance and Roxette, have in-game sex.
Strimzi
Strimzi is an open-source CNCF incubating project (Sandbox 2019, Incubating 2024), developed by Red Hat in 2017, that runs Apache Kafka clusters on Kubernetes and OpenShift via the operator pattern, managing brokers, topics, users, Connect, and MirrorMaker as custom resources.
Strindberg (Mercurian crater)
Strindberg is a 189-km-diameter impact crater on Mercury at 53.41°N, 136.67°E, named in 1979 for Swedish playwright August Strindberg; its lava-flooded floor and inner-ring hollows in low-reflectance material were imaged by Mariner 10 and MESSENGER.
String
A string is a data type in programming that represents text as an ordered sequence of characters, appearing in nearly every language and usually encoded as UTF-8 or UTF-16.
String (computer science)
A string in computer science is a sequence of characters stored in memory as data, with a string data type defined as an ordered sequence of code units.
String breaking
String breaking is a quantum field theory phenomenon in which the energy in the confining connection between two particles grows until new particle-antiparticle pairs are created.
String cheese
String cheese, also known as Cheesestring, is a snack cheese made from low-moisture mozzarella that can be peeled into strings, invented in Wisconsin in the mid-20th century.
String cosmology
String cosmology is the application of string theory to the origin and evolution of the universe, covering moduli stabilization, string inflation, reheating, dark energy, and bouncing scenarios.
String field theory
String field theory (SFT) is the formulation of string theory as a spacetime quantum field theory rather than single-string world-sheet quantization, known for describing nonperturbative effects like tachyon condensation.
String instrument
String instrument (chordophone): an instrument whose sound comes mainly from vibrating strings stretched between fixed points, classified in Hornbostel-Sachs as simple (zithers) or composite (lutes, harps); includes violin, guitar, piano, sitar.
String inverter
A string inverter is a device that converts the direct current of one series-wired string of solar panels into alternating current, the standard choice for homes.
String landscape
The string landscape is the vast set of metastable vacuum states of string theory, an estimated 10^500 vacua, each possibly a universe with its own particles and forces.
String lights
String lights are decorative lights mounted along a flexible cable, most often as holiday decorations; the first electric string was hand-wired by Edward H. Johnson in 1882.
String method (molecular dynamics)
The string method is a molecular-simulation technique for computing transition pathways, free energy barriers, and transition rates of rare events, introduced by Weinan E and colleagues in 2002.
String octet
String octet: chamber music for eight strings, four violins, two violas, two cellos. Founded by Spohr's 1823 Double Quartet and defined by Mendelssohn's Octet in E-flat, Op. 20 (1825), later Enescu, Bruch, and Respighi.
String of Pearls (Indian Ocean)
String of Pearls (Indian Ocean): geopolitical theory of a Chinese network of ports and facilities from the mainland to Port Sudan, coined in a 2005 Booz Allen Hamilton Pentagon report; China denies it, and scholars find little military evidence.
String quartet
String quartet: an ensemble of two violins, viola, and cello, or a work for it. Established by Haydn (68 quartets), modeled by Op. 33 and Mozart's 1785 Haydn quartets, expanded by Beethoven's 16 quartets and 20th-century works.
String Quartet No. 14 (Beethoven)
Beethoven's String Quartet No. 14 in C-sharp minor, Op. 131 (1826), a late quartet in seven attacca pieces opening with a slow fugue, dedicated to Baron von Stutterheim and published by Schott in 1827.
String quintet
String quintet: a five-player chamber ensemble, one to a part, no conductor. Standard scorings add a second viola (Mozart, Brahms), a second cello (Boccherini, Schubert's C major D. 956), or a double bass (Onslow) to the string quartet.
String tension (QCD)
In quantum chromodynamics (QCD), the string tension is the energy per unit length of the flux tube between a quark and antiquark, about 440 MeV squared, quantifying confinement.
String theory
String theory is a theoretical framework replacing point-like particles with vibrating strings whose modes appear as different particles, including the graviton; it requires extra spacetime dimensions.
String trio
String trio: chamber ensemble of three strings, usually violin, viola, and cello or two violins and cello. Grew from the baroque trio sonata; landmark works include Mozart's Divertimento K. 563 and Beethoven's Op. 9 trios.
String vibration
String vibration is the oscillation of a stretched string, whose fixed ends allow only standing-wave modes at harmonic frequencies, the physical basis of stringed instruments.