All articles starting with Q
2,252 articles
Quiahuiztlan
Quiahuiztlan (Quiahuiztlán, "place of rain") is a Totonac archaeological zone on Cerro de los Metates, Actopan, Veracruz, Mexico: a 900–1521 city, fortress, and 78-tomb cemetery where Cortés allied with the Totonacs against the Aztec empire.
Quibdó
Quibdó, capital of Colombia's Chocó Department, is an Afro-Colombian river port on the Atrato River, departmental capital since 1947, with over 60% monetary poverty, UNESCO-listed San Pacho festival, and severe flood and earthquake risk.
Quibi
Quibi was a mobile-only subscription streaming service for short videos founded by Jeffrey Katzenberg and led by Meg Whitman, launched in April 2020 and shut down within six months.
Quibim
Quibim is a Spanish healthtech startup based in Valencia that develops AI software for analyzing medical images, best known for its QP-Prostate product for prostate cancer detection.
QUIC
QUIC, short for Quick UDP Internet Connections, is an encrypted transport protocol running over UDP, standardized by the IETF in May 2021, and serves as the transport beneath HTTP/3.
Quiçama Biosphere Reserve
Quiçama Biosphere Reserve (Reserva da Biosfera Quiçama), Angola's first UNESCO biosphere reserve, designated 27 September 2025 in Hangzhou; 3,316,050 ha along 206 km of Atlantic coast with eight core areas, 3,550 residents, and manatee and elephant habitat.
Quiche
Quiche, best known as quiche lorraine, is a French savory egg-and-cream custard baked in a pastry crust, originating in Lorraine; the original version uses bacon, eggs, and crème fraîche and contains no cheese.
Quick (restaurant)
Quick is a fast-food burger chain founded in Belgium around 1971, long McDonald's main French competitor, known for its exclusively halal meat and now owned by H.I.G. Capital.
Quick access recorder
A quick access recorder (QAR) is an aircraft flight data recorder giving airlines fast, routine access to raw flight data for safety and performance monitoring programs.
Quick Change
Quick Change (1990) is a Warner Bros. heist comedy, the directorial debut of Bill Murray co-directed with Howard Franklin, based on Jay Cronley's 1981 novel. Murray, Geena Davis, and Randy Quaid rob a Manhattan bank as a clown, then struggle to escape New York; it flopped commercially but holds 84% on Rotten Tomatoes.
Quick Charge
Quick Charge (QC), also known as Qualcomm Quick Charge, is a proprietary fast-charging technology developed by Qualcomm that lets devices negotiate higher voltage over USB, powering over a billion devices.
Quick Chess
Quick Chess (Quickchess) is a 1991 minichess variant by Joe Miccio, published by Amerigames International: a 5x6 board, one each of five piece types plus five pawns, no castling or en passant, and a double-sided board with full chess.
Quick clay
Quick clay is a highly sensitive glaciomarine clay that keeps its structure while undisturbed but liquefies when remolded, responsible for major landslides in Scandinavia and northern North America.
Quick Draw McGraw
Quick Draw McGraw is a slow-witted horse sheriff cartoon character created by William Hanna and Joseph Barbera, title character of Hanna-Barbera's 1959 syndicated show with Baba Looey and the El Kabong alter ego, 45 episodes, voiced by Daws Butler.
Quick Gun Murugun (क्विक गन मुरुगुन)
Quick Gun Murugun (क्विक गन मुरुगुन), full title Misadventures of an Indian Cowboy, is a 2009 Indian comedy Western spoof by Shashanka Ghosh starring Rajendra Prasad, from a Channel V character, fighting villain Rice Plate Reddy over beef dosas.
Quick ratio
The quick ratio, also called the acid-test ratio, is a liquidity measure that divides cash, marketable securities, and receivables by current liabilities, deliberately excluding inventory.
QuickBird
QuickBird was a commercial Earth-imaging satellite built by Ball Aerospace and operated by DigitalGlobe of Longmont, Colorado, delivering the highest-resolution imagery then commercially available from its launch in 2001 until its retirement in 2015.
QuickBooks
QuickBooks, also known as Intuit Quickbooks, is a family of small-business accounting software from Intuit, led by cloud-based QuickBooks Online with roughly 7 million customers worldwide.
Quickening
Quickening is a pregnant woman's first perception of fetal movement, typically between 14 and 22 weeks' gestation, most often 18 to 20 weeks. Historically it confirmed pregnancy and marked the common-law abortion threshold before quickening.
Quickest change detection
Quickest change detection (QCD) is the sequential statistical problem of detecting an abrupt change in a data stream's distribution as soon as possible, balancing detection delay against a false alarm budget.
Quicksand
Quicksand, also known as sinking sand, is sand saturated with water so that it flows like a liquid; people sink only to about the waist.
Quicksand (TV series)
Quicksand (Störst av allt) is a 2019 Swedish courtroom thriller limited series, Netflix's first Swedish original, adapted from Malin Persson Giolito's novel and starring Hanna Ardéhn as Maja Norberg.
Quickselect
Quickselect, also called Hoare's selection algorithm, is a selection algorithm that finds the k-th smallest element of an unordered array. Devised by Tony Hoare, it runs in expected linear time.
Quicksilver
Quicksilver (QuickSilver) is a shared name covering Quicksilver Golf Club in Midway, PA, QuickSilver Controls motion-control products, the fatal 1951 Gold Cup hydroplane, Quicksilver Running events, and QuickSilver verification software.
Quicksilver (Hart novel)
Quicksilver (Fae & Alchemy, book 1) is Callie Hart's 2024 dark romantasy about Saeris Fane, whose metal powers draw her through a quicksilver portal into a fae realm; a BookTok hit, New York Times No. 1 bestseller, and Netflix adaptation.
Quicksilver (Marvel Comics)
Quicksilver is the Marvel Comics superhero codename of Pietro Maximoff, twin brother of the Scarlet Witch, created by Stan Lee and Jack Kirby, first appearing in 1964.
Quicksilver Messenger Service
Quicksilver Messenger Service, an American psychedelic rock band formed in San Francisco in 1965, known for the twin guitars of John Cipollina and Gary Duncan, the live album Happy Trails with its 25-minute Who Do You Love suite, and a revolving lineup led at times by Dino Valente.
Quicksort
Quicksort, also called partition-exchange sort, is a divide-and-conquer sorting algorithm that partitions an array around a pivot and recursively sorts each side. Tony Hoare invented it in 1959, and it typically runs fastest in practice.
QuickTime
QuickTime, also known as Apple QuickTime, is Apple's multimedia software architecture for video and audio, first shipped for the Macintosh in December 1991; its .mov file format underlies the MPEG-4 standard.
Quid pro quo
Quid pro quo, Latin for "something for something," is an exchange of one thing for another; in law it names contractual consideration, Title VII sexual harassment, and the exchange structure of bribery.