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Triple Crown of Thoroughbred Racing
American Triple Crown of Thoroughbred Racing: Kentucky Derby, Preakness Stakes, Belmont Stakes for three-year-olds in five weeks; 13 winners from Sir Barton (1919) to Justify (2018).
Triple Crown of Thoroughbred Racing (Japan)
Japanese Classic Triple Crown (JRA Classic Sampo): sweep of the Satsuki Sho, Tokyo Yushun (Japanese Derby), and Kikuka Sho. Eight winners, 1941-2020, from Saint Lite to the unbeaten Contrail.
Triple Crown of Thoroughbred Racing (United States)
The American Triple Crown of Thoroughbred Racing, also called the Triple Crown, is the Kentucky Derby, Preakness Stakes, and Belmont Stakes sweep for 3-year-olds; 13 colts from Sir Barton (1919) to Justify (2018) have won it.
Triple deity
Triple deity, also called threefold, tripartite, triune, or triadic deity: a god or goddess appearing in three forms, or a group of three deities acting as one. Examples include Hecate, the Trimurti, Egyptian triads, Triglav, and the Neo-Pagan Triple Goddess, distinct from the Christian Trinity.
Triple DES
Triple DES (3DES), formally the Triple Data Encryption Algorithm, is a block cipher applying DES three times per 64-bit block; FIPS-approved in 1999, it was withdrawn in 2024.
Triple divide
A triple divide, also called a triple watershed or hydrological apex, is where two continental divides intersect, letting water drain into three different watersheds, as at Montana's Triple Divide Peak.
Triple E-class container ship
The Triple E class is a Maersk Line class of container ships that were the largest ever built when they entered service in 2013, carrying 18,000 TEU.
Triple Entente
The Triple Entente was the grouping of Great Britain, France, and Russia that took shape in 1907, completed by the Anglo-Russian Convention and opposed to the Triple Alliance.
Triple Frontier (film)
Triple Frontier is a 2019 Netflix action thriller directed by J.C. Chandor and co-written with Mark Boal, starring Ben Affleck, Oscar Isaac, Charlie Hunnam, Garrett Hedlund, and Pedro Pascal as ex-Delta Force operatives robbing a drug lord of $75 million; 71% on Rotten Tomatoes, $115 million budget.
Triple Gate
The Triple Gate is a blocked monumental gate of three arched portals in the Southern Wall of the Temple Mount in Jerusalem, possibly the ancient eastern Huldah Gate.
Triple glazing
Triple glazing is an insulated window unit with three glass panes separated by two sealed cavities, typically argon filled, reducing heat loss and cutting heating energy in cold climates.
Triple Goddess (Neopaganism)
Triple Goddess (Neopaganism): the Maiden-Mother-Crone triad of Wicca and Goddess spirituality, matched to the moon's phases. Derived mainly from Robert Graves's The White Goddess (1948), it is a modern construction without ancient maiden-mother-crone precedent.
Triple Gold Club
Triple Gold Club: IIHF honour for players winning the Stanley Cup, Olympic gold, and World Championship gold; 30 players plus coach Mike Babcock, first members 1994, Filppula 30th in 2022.
Triple H
Triple H is the ring name of Paul Michael Levesque, WWE wrestler and executive: 14-time world champion, D-Generation X co-founder, Evolution leader, retired 2022 after a cardiac event, now Chief Content Officer and 2025 Hall of Fame inductee.
Triple IN trial
Triple IN (NCT01297959) was a Phase 3 randomized double-blind trial of topical E-101 Solution, a glucose oxidase and porcine myeloperoxidase antiseptic, versus saline to prevent incisional surgical site infections after elective colorectal surgery; 503 participants, completed 2015, results posted 2021.
Triple Intervention
Triple Intervention (Tripartite Intervention): Russia, Germany, and France on 23 April 1895 forced Japan to return the Liaodong Peninsula ceded by the Treaty of Shimonoseki; the powers then took leased Chinese territories themselves.
Triple J
Triple J (2JJ, Double Jay) is the ABC's national youth radio network for 18-24 year-old Australians, launched 19 January 1975 in Sydney, moved to FM in 1980, national from 1989, with a 40% Australian music quota, the Hottest 100 poll, and Unearthed and Double J spin-off stations.
Triple J Hottest 100
Triple J Hottest 100 (Hottest 100): triple j's annual listener poll of favourite songs of the year, run since 1989 and counted down each late January; won in 2024 by Chappell Roan and in 2025 by Olivia Dean.
Triple J's Hottest 100 of 2025
Triple J's Hottest 100 of 2025, the 33rd annual listener poll, was broadcast 24 January 2026; Olivia Dean's "Man I Need" won over Keli Holiday's "Dancing2", with 2.1 million votes and 54 Australian songs.
Triple J's Hottest 100 of Australian Songs
Triple J's Hottest 100 of Australian Songs was a 2025 special all-time poll marking triple j's 50th birthday, distinct from the annual countdown. INXS's "Never Tear Us Apart" won from 2.65 million votes, ahead of Hilltop Hoods and The Veronicas.
Triple jump
Triple jump (hop, step and jump): track and field event with three consecutive phases into a sand pit. Men's record 18.29 m (Jonathan Edwards, 1995); women's record 15.74 m (Yulimar Rojas, 2022).
Triple junction
A triple junction is the point where the boundaries of three tectonic plates meet, the only stable configuration on a sphere; the Afar and Mendocino junctions are classic examples.
Triple M
Triple M, stage name of Finnish DJ and producer Mikko Matias Mäkinen, releases big-room and future-house EDM on labels including Spinnin' Records, with over 20 million Spotify streams.
Triple modular redundancy
Triple modular redundancy is a fault-tolerance technique that runs three copies of a module and votes on outputs, masking any single fault, widely used in spacecraft.
Triple Nine Society
The Triple Nine Society (TNS), founded in 1978, is an international high-IQ society admitting adults at or above the 99.9th percentile, about one person in a thousand.
Triple oxygen isotope analysis
Triple oxygen isotope analysis measures the relative abundances of the stable oxygen isotopes ¹⁶O, ¹⁷O, and ¹⁸O, quantifying deviations that record temperatures, hydrologic processes, and atmospheric chemistry.
Triple parentheses
Triple parentheses, or the (((echo))), is an antisemitic typographic symbol marking names or terms as Jewish. Originated on the 2014 Daily Shoah podcast; listed by the ADL as a hate symbol in June 2016.
Triple point
The triple point is the unique temperature and pressure at which solid, liquid, and gas phases coexist in equilibrium; water's triple point is 0.01 °C and 611.657 pascals.
Triple product
The triple product, also called the triple vector product, combines three vectors via dot and cross products: a scalar form giving parallelepiped volume and a vector form simplified by the BAC-CAB identity.
Triple quadrupole mass spectrometry
Triple quadrupole mass spectrometry (QqQ) is a tandem mass spectrometry method using two mass filters and a collision cell to quantify targeted compounds with very high sensitivity.