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Alternator
An alternator is an electrical machine converting mechanical rotation into alternating current power. In automobiles it charges the battery and supplies every electrical system while the engine runs.
Alternator (automotive)
The automotive alternator is the belt-driven generator that powers a car's electrical system and recharges the battery while the engine runs, replacing the dynamo in the 1960s.
Alteromonas
Alteromonas, genus of marine gram-negative rods (Gammaproteobacteria, Alteromonadaceae), motile by one polar flagellum; type species A. macleodii; copiotrophic oil-degrading bacteria of coastal and open-ocean waters.
ALTERPRONE trial
ALTERPRONE (NCT03719937) was a single-center pilot physiological trial at Catholic University of the Sacred Heart testing 100 g/kg anterior chest wall loading for 3 hours supine as an alternative to prone positioning in moderate-to-severe ARDS; suspended during the COVID-19 pandemic.
Alteryx
Alteryx is an American data analytics software company headquartered in Irvine, California, whose drag-and-drop Designer product lets analysts prepare, blend, and analyze data without code.
Altesa BioSciences, Inc.
Altesa BioSciences is a private clinical-stage pharmaceutical company founded in 2020 in College Park, Georgia, led by Brett Giroir and developing the antiviral vapendavir for COPD.
AltGr key
The AltGr key, also written Alt Gr, is the right-hand Alt key on many non-U.S. computer keyboards that types third-level characters like @, {, €, and accented letters.
Althaea officinalis
Althaea officinalis, marsh mallow, a Malvaceae perennial of Europe to Siberia and NW Africa whose dried root (Althaeae radix) is an EU-approved traditional demulcent for cough and mild gut discomfort.
Althea (song)
"Althea" is a Grateful Dead song with lyrics by Robert Hunter and music by Jerry Garcia, first performed live in 1979 and released on Go to Heaven (1980).
Althea Ablan
Althea Ablan (Ma. Altheyah Sofia Olaivar Ablan, born 2004) is a Filipino actress known for Prima Donnas (Donna Belle), AraBella (Bella), Encantadia, and Mulawin vs Ravena; a GMA artist for ten years, she signed with Viva Artists Agency in 2026.
Althea Flynt
Althea Flynt (Althea Leasure, 1953–1987), American co-publisher of Hustler magazine and fourth wife of Larry Flynt; ran the publishing operation with him, died of HIV/AIDS-related drowning in Los Angeles.
Althea Gibson
Althea Gibson (1927-2003), American tennis champion and professional golfer; first Black winner of a Grand Slam singles title (French 1956), Wimbledon and U.S. Nationals 1957-1958; 11 majors; LPGA pioneer.
Althea Laurin
Althea Laurin (Althéa Laurin, born 2001), French taekwondo heavyweight. Olympic +67 kg champion Paris 2024, France's first taekwondo gold; Tokyo 2020 bronze; world champion −73 kg Baku 2023; 20-month AFLD suspension in 2025.
Althea McNish
Althea McNish (1924–2020), Trinidadian-British textile designer, first Caribbean designer of international recognition; creator of Golden Harvest, fabrics for Liberty, Dior, and Queen Elizabeth II's 1966 Trinidad tour wardrobe.
Altheim-Wagham villa rustica
Altheim-Wagham villa rustica: Roman farmstead in Wagham, Altheim municipality, Upper Austria (Innviertel), one of three local villas; occupied about 100-200 AD, found 1991, excavated 1994 by the Bundesdenkmalamt, with a 13.5 m building foundation.
Altheim-Weirading villa rustica
The Altheim-Weirading villa rustica is a Roman farm estate near Altheim in Upper Austria, occupied from about 80 to 240 CE and excavated in 1994–1998.
Althiburos
Althiburos (Altiburus) was an ancient city of Numidia on the Sra Ouartene plateau near El Kef in western Tunisia, a Roman municipium under Hadrian from about 128.
Althing
Althing (Alþingi), the parliament of Iceland, founded about 930 AD at Þingvellir and often called the world's oldest functioning parliament; abolished 1800, restored 1845, unicameral with 63 seats since 1991.
Althorp
Althorp, also known as Althorp House, is a Grade I country house and 13,000-acre estate in West Northamptonshire, England, seat of the Spencer family since 1508 and Diana, Princess of Wales's burial place since 1997.
Altice (company)
Altice, also known as Altice Group, is a telecommunications and cable group founded by Patrick Drahi in 2001, which grew into operators in France, Portugal, and the United States.
Altice Portugal
Altice Portugal is Portugal's largest telecommunications company, owner of the MEO brand and successor to Portugal Telecom, created in 2015 when Altice acquired PT Portugal from Oi.
Altice USA
Altice USA, renamed Optimum Communications Inc. (NYSE: OPTU, formerly ATUS) in November 2025, is a major US broadband, video, and mobile provider across 21 states, formed from the 2015-2016 Suddenlink and Cablevision acquisitions by Patrick Drahi's Altice group.
Altiev
Altiev (Altıev, "six houses") is a two-row mancala variant from Safranbolu, Turkey, played on a 2x6 board with three counters per hole, relay sowing, capture on landing in an empty own-row hole, and victory when the opponent's row empties.
Altimeter
An altimeter is an instrument that measures altitude. In aircraft, barometric altimeters infer height above sea level from pressure, while radio altimeters measure terrain clearance directly.
Altimeter Adirondack
Altimeter Adirondack is a series of two Delaware venture capital funds based in Boston, Massachusetts, reporting a combined $316.77 million raised in SEC Form D filings from 2025 and 2026.
Altimeter Capital
Altimeter Capital is a technology-focused crossover investment firm founded by Brad Gerstner in 2008, running a public tech hedge fund alongside private growth funds from Menlo Park, California.
Altimeter Growth Cascade Fund
Altimeter Growth Cascade Fund is a Delaware pooled venture capital fund formed in 2020 by Brad Gerstner's Altimeter Capital Management, raising about $101 million from 24 investors.
Altimeter Growth Olympic
Altimeter Growth Olympic is a family of privately offered growth-equity funds, Delaware limited partnerships tied to Brad Gerstner and Boston, filed with the SEC from April 2025.
Altimeter Growth Partners
Altimeter Growth Partners is a series of growth-stage venture capital funds filed with the SEC by Altimeter Capital Management, Brad Gerstner's Boston technology investment firm.
Altimeter setting
An altimeter setting is the barometric pressure a pilot sets on an altimeter so it reads height relative to sea level, an airfield, or a standard datum.