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STIP1
STIP1 (Hop/Sti1, stress induced phosphoprotein 1) is a human co-chaperone gene encoding an adaptor that bridges Hsp70 and Hsp90, stimulating Hsp70 ATPase and inhibiting Hsp90 ATPase during client protein folding; secreted Hop also signals via prion protein and is implicated in cancer and neurodegeneration.
Stipa
Stipa (feather grasses, needlegrasses) is a Poaceae genus of perennial tussock grasses with twisted, hygroscopic awns; about 141 accepted Old World species, centered in Middle Asian steppes, type species S. pennata.
Stipe Miocic
Stipe Miocic, retired American UFC heavyweight champion from Euclid, Ohio; two-time titleholder with a record four defenses, wins over Werdum, Ngannou, and Cormier; retired 2024 at 20-5.
Stipend
A stipend is a fixed, often periodic payment supporting a person's living or training expenses during study, research, service, or unpaid work, and is usually taxable in the US.
Stipendiary magistrate
Stipendiary magistrate: salaried, legally qualified judge in UK magistrates' courts, also called district judge (magistrates' courts) after the Access to Justice Act 1999; sat alone, unlike unpaid lay justices.
Stiquito
Stiquito is a small, inexpensive six-legged walking robot whose legs are moved by contracting nitinol shape-memory alloy wires rather than motors, developed at Indiana University in 1992.
Stir bar sorptive extraction
Stir bar sorptive extraction (SBSE) is a sample preparation technique in which a stir bar coated with polydimethylsiloxane extracts and concentrates organic analytes from liquid samples before chromatographic analysis.
Stir casting
Stir casting, also called vortex or slurry casting, is a liquid-state method for making metal matrix composites by dispersing ceramic particles into molten metal with mechanical stirring.
Stir Crazy (film)
Stir Crazy (1980) is a Sidney Poitier comedy starring Gene Wilder and Richard Pryor as friends wrongfully imprisoned for a bank robbery, escaping via a prisoners' rodeo. It grossed $101.3 million domestically for Columbia and ranks among AFI's 100 funniest films.
Stir frying
Stir frying (炒, chǎo) is a Chinese cooking technique: small-cut food cooked fast in little oil over high heat in a wok, with constant stirring; distinct from sautéing by higher heat, shorter time, and wok-based two-zone cooking.
Stir of Echoes
Stir of Echoes (1999) is a supernatural horror film directed by David Koepp, based on Richard Matheson's 1958 novel, starring Kevin Bacon as a Chicago lineman haunted by a murdered girl's ghost after hypnosis; it earned $23 million worldwide and was overshadowed by The Sixth Sense.
Stiripentol
Stiripentol (Diacomit) is a third-generation antiseizure medication, a GABAergic and CYP-inhibiting dioxolane approved from 2007 (EU) and 2018 (FDA) as add-on to clobazam and valproate for refractory tonic-clonic seizures in Dravet syndrome.
Stiris/Steiris
Stiris (Στείρις, Steiris) was an ancient Phocian city in central Greece near Hosios Loukas, claimed Athenian origin, with a sanctuary of Demeter Stiria; destroyed by Philip II in 346 BC and Rome in 147 BC.
Stirling
Stirling is a historic city in central Scotland on the River Forth, a royal burgh since about 1124, site of Stirling Castle and the 1297 Battle of Stirling Bridge, population 94,040 in 2025.
Stirling Albion F.C.
Stirling Albion F.C., the Binos, a Scottish League Two club founded in 1945 to replace King's Park, playing at Forthbank Stadium since 1993 and majority-owned by its supporters' trust since 2010.
Stirling Castle
Stirling Castle is a royal castle in Scotland, first recorded around 1110 and a principal royal seat until the Union of the Crowns in 1603.
Stirling Colgate
Stirling Colgate (1925–2013) was an American physicist and astrophysicist who led Castle Bravo diagnostics, modeled core-collapse supernovae, and proposed Type I supernovae as standard candles for cosmology.
Stirling cycle
The Stirling cycle is a closed, regenerative thermodynamic cycle patented by Robert Stirling in Scotland in 1816, in which a regenerator stores heat and, with perfect regeneration, the efficiency matches the Carnot limit.
Stirling engine
A Stirling engine, also called a Stirling cycle engine, is an external-combustion heat engine patented by Robert Stirling in 1816 that runs on any heat source.
Stirling Moss
Sir Stirling Moss (1929–2020), British racing driver nicknamed Mr Motor Racing; won 16 World Championship Grands Prix and the 1955 Mille Miglia, runner-up four times, yet never won the F1 title.
Stirling numbers
Stirling numbers are two families of integer arrays, s(n, k) and S(n, k), counting permutations of a set by cycles and partitions into nonempty subsets, named for James Stirling.
Stirling numbers and exponential generating functions in symbolic combinatorics
Stirling numbers of the first and second kind have closed-form exponential generating functions, which in symbolic combinatorics turn classical recurrences into consequences of simple set constructions.
Stirling numbers of the first kind
Stirling numbers of the first kind, named for James Stirling, count the permutations of n objects that decompose into exactly k cycles and appear as coefficients when a falling factorial is expanded in powers.
Stirling numbers of the second kind
Stirling numbers of the second kind, also called Stirling partition numbers, count the ways to partition a set of n labeled elements into exactly k nonempty subsets.
Stirling radioisotope generator
A Stirling radioisotope generator is a spacecraft power system that converts plutonium-238 decay heat into electricity using a Stirling-cycle engine, about four times more efficient than thermoelectric systems.
Stirling solar dish engine
A Stirling solar dish engine is a concentrating solar power system in which a parabolic dish of mirrors focuses sunlight onto a Stirling engine that drives a generator.
Stirling's approximation
Stirling's approximation, also called Stirling's formula, is the asymptotic formula n! ≈ √(2πn)(n/e)^n for large n, published by James Stirling in Methodus differentialis in 1730, with relative error about 1/(12n).
STIRPAT model
The STIRPAT model, a stochastic reformulation of the IPAT identity, is a regression framework estimating how population, affluence, and technology drive environmental impacts such as CO2 emissions.
Stirred-tank bioreactor
A stirred-tank bioreactor is a cylindrical vessel whose rotating impellers mix a liquid culture while a bottom sparger supplies oxygen, serving microbial fermentation and mammalian cell culture.
Stirrup
A stirrup is a metal loop hung by a strap from a saddle to support a rider's foot and aid mounting, originating in Asia by the 4th century CE.