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Aquifer
An aquifer, also known as a groundwater basin, is an underground layer of soil or rock that stores groundwater and transmits it to wells, springs, and streams.
Aquifer storage and recovery
Aquifer storage and recovery (ASR) is a water management method that injects treated water into an aquifer through a well and later pumps it back out for use.
Aquifer thermal energy storage
Aquifer thermal energy storage (ATES) is an underground technology that stores heat and cold seasonally in groundwater, using paired wells to heat and cool buildings, mostly in the Netherlands.
Aquifoliaceae
Aquifoliaceae (holly family, Ilicaceae synonym) is a monogeneric flowering plant family in Aquifoliales, campanulids: Ilex, ca. 500-600 dioecious tree and shrub species, drupes with pyrenes, source of yerba mate and ornamental hollies.
Aquifoliales
Aquifoliales (Senft, 1856) is an accepted order of campanulid flowering plants with five families, Aquifoliaceae, Cardiopteridaceae, Helwingiaceae, Phyllonomaceae, and Stemonuraceae; synonyms Ilicales, Cardiopteridales, Helwingiales; best known for hollies, Ilex.
Aquila
Aquila (Brisson, 1760) is the genus of true booted eagles in Accipitridae, type species the Golden Eagle Aquila chrysaetos; ITIS lists 11 species including imperial, steppe, and Bonelli's eagles.
Aquila (constellation)
Aquila is a constellation representing the Eagle, lying on the celestial equator in the Milky Way, whose brightest star, Altair, forms the Summer Triangle with Vega and Deneb.
Aquila (model family)
Aquila is a family of open bilingual Chinese and English large language models developed by the Beijing Academy of Artificial Intelligence, first released in 2023.
Aquila (Roman)
Aquila (Roman): the eagle standard of a Roman legion, adopted as the legion's emblem from the time of Marius (104 BC per Pliny). Carried by the aquilifer, guarded by the primus pilus, kept in a camp shrine; lost eagles at Carrhae and Teutoburg were national traumas.
Aquila clanga
Aquila clanga (Clanga clanga), the Greater Spotted Eagle, a Vulnerable migratory Eurasian eagle 62-74 cm long with 3,900-10,000 mature individuals, threatened by habitat loss and hybridization with the Lesser Spotted Eagle.
Aquila heliaca
Aquila heliaca, the Eastern Imperial Eagle, is a large Vulnerable Accipitridae eagle breeding from East-central Europe to Lake Baikal, wintering in Africa, the Middle East, and South Asia, threatened by habitat loss and electrocution.
Aquilaria malaccensis
Aquilaria malaccensis (agarwood, karas) is a Critically Endangered Thymelaeaceae tree from Bangladesh to Malesia, the preferred agarwood source for Middle Eastern and Indian perfumery, CITES Appendix II listed since 1995, with wild populations down over 80%.
Aquilegia
Aquilegia (columbine) is a Ranunculaceae genus of about 130 perennial species native from the temperate Northern Hemisphere to Guatemala, known for petal nectar spurs that evolved 5-7 million years ago and track pollinator tongue length.
Aquilegia canadensis
Aquilegia canadensis (red columbine, wild columbine), a Ranunculaceae perennial native from Central and Eastern Canada to NE Mexico; nodding red spurred flowers, highly self-compatible, mean 75% selfing, strong inbreeding depression (δ≈0.88).
Aquilegia vulgaris
Aquilegia vulgaris (common columbine, granny's bonnets) is a European perennial Ranunculaceae herb with nodding blue-violet flowers and short hooked nectar spurs, bumblebee-pollinated, type species of Aquilegia, toxic (cyanogenic glucosides), widely cultivated and naturalized.
Aquileia
Aquileia: Roman colony founded 181 BCE on the Natiso River in Friuli-Venezia Giulia, Italy; a wealthy early Roman Empire trade city destroyed by Attila in 452, now a 1998 UNESCO World Heritage site with an unexcavated urban reserve and the mosaic-floored Patriarchal Basilica.
Aquiline Financial Services
Aquiline Financial Services, also known as Aquiline Capital Partners, is a New York private equity firm founded in 2005 that invests in financial services and technology.
Aquiline nose
Aquiline nose (Roman nose): a human nose with a convex, eagle-beak-like curved profile, from Latin aquilinus. Literary term; anatomically a bony-cartilaginous dorsal hump; historically noble in Europe, criminalized in physiognomy.
Aquilino Ribeiro
Aquilino Ribeiro (1885–1963) was a Portuguese novelist whose fiction rooted in the Beira Alta highlands made him a leading prose writer of the 20th century.
Aquino Rebellion
The Aquino Rebellion was an 1833 indigenous uprising in the State of El Salvador, led by Anastasio Aquino against a restored tribute tax and forced labor.
Aquinoism
Aquinoism is the political identity associated with the Aquino family, a leading Philippine political dynasty beginning with Corazon Aquino, president after the 1986 People Power Revolution.
Aquion Energy
Aquion Energy was an American battery manufacturer spun out of Carnegie Mellon University in 2009 by Jay Whitacre, producing Aqueous Hybrid Ion sodium batteries for stationary energy storage from Pittsburgh, Pennsylvania.
Aquis Submersus
Aquis Submersus, Latin for "in water sunk", is an 1876 novella by Theodor Storm about the tragic love between the painter Johannes and the noblewoman Katharina in postwar Germany.
Aquitaine
Aquitaine: historical province and former administrative region of southwest France, capital Bordeaux. Under Eleanor of Aquitaine it passed to England; merged with Limousin and Poitou-Charentes into Nouvelle-Aquitaine on 1 January 2016.
Aquitanian
The Aquitanian is the lowest stage of the Miocene, spanning 23.03 to 20.45 million years ago, named after Aquitaine in France, and defined by a boundary section in northwestern Italy.
Aquitanian language
Aquitanian is an extinct ancient language of the area between the Pyrenees, Garonne, and Atlantic, known only from names in Latin inscriptions; it is either the direct ancestor of Basque or its closest relative.
Aquitard
An aquitard is a saturated geologic formation of low permeability, usually clay, silt, or shale, that slows groundwater, confines aquifers, and allows slow vertical leakage between them.
Aquivion
Aquivion is a short-side-chain perfluorosulfonic acid ionomer produced by Solvay Specialty Polymers and, after 2023, Syensqo, used in fuel cells, water electrolyzers, and flow batteries.
Aqwam al-Masalik
Aqwam al-Masalik (أقوم المسالك) is an Arabic reform treatise by Khayr al-Din al-Tunisi, published in Tunis in 1867 or 1868, arguing for adapting European institutions.
ar (Unix)
Ar is a standard Unix utility that combines several files into a single archive, most often used to bundle object files into a static library for the link editor.