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Aviation medicine
Aviation medicine, also known as aerospace medicine, is the medical specialty combining preventive, occupational, environmental, and clinical medicine with flight physiology, covering crew, passengers, and pilot medical certification.
Aviation prizes and challenges
Aviation prizes and challenges are cash awards offered for a first flight feat, race win, or new flight technology, from the Orteig Prize to the Ansari X Prize.
Aviation propaganda poster
An aviation propaganda poster is a printed graphic from the World Wars that uses aircraft and aircrew imagery to recruit personnel, sustain civilian morale, and sell war bonds.
Aviation regiments of the Soviet and Russian Air Forces
An aviation regiment was a flying unit of the Soviet and later Russian Air Forces, above the squadron and below the air division, typically fielding about 36 aircraft.
Aviation safety
Aviation safety, also known as airline or aircraft safety, covers the practices, regulations, and management systems used to reduce risks across air travel; commercial flying is among the safest forms of transport.
Aviation safety management system
An aviation safety management system (SMS) is a formal, top-down approach to managing safety risk, built on the ICAO Annex 19 framework of four components.
Aviation Safety Reporting System
The Aviation Safety Reporting System (ASRS) is a voluntary, confidential program, administered by NASA and funded by the FAA, where aviation personnel report safety incidents since 1976.
Aviation transponder interrogation modes
Aviation transponder interrogation modes are the standard formats of 1030 MHz signals sent to aircraft transponders, which reply on 1090 MHz with identity, altitude, or selective data.
Aviator badge
Aviator badge (wings): US military qualification insignia for rated pilots and aircrew. Spans the 1913 gold Military Aviator badge, 1917 embroidered wings, Herbert Adams' 1919 shape, and Naval aviator wings of 1917.
Aviator DC REIT Holdings
Aviator DC REIT Holdings is a family of Delaware holding and co-investment vehicles holding data-center interests within the DigitalBridge platform, managed by DB Aviator Manager, LLC of Boca Raton, Florida.
Aviator sunglasses
Aviator sunglasses are a style defined by large teardrop lenses, a thin metal frame, and a double bridge, developed in the 1930s to protect American military pilots from glare.
Avibactam
Avibactam (NXL104) is a diazabicyclooctane, non-beta-lactam beta-lactamase inhibitor with covalent reversible inhibition of class A, C, and some class D enzymes; approved 2015 with ceftazidime as AVYCAZ.
Avibirnavirus gumboroense
Avibirnavirus gumboroense is the ICTV virus species holding infectious bursal disease virus (IBDV, Gumboro disease virus), a bisegmented dsRNA birnavirus of birds that destroys bursal B lymphocytes, causing immunosuppressive disease in young chickens.
AVIC Capital
AVIC Capital (中航资本), renamed AVIC Industry-Finance Holdings in 2021, was the Shanghai-listed financial holding platform of China's state aviation group AVIC, delisted in May 2025.
AVIC Chengdu Aircraft
AVIC Chengdu Aircraft (成飞, CAC), formally Chengdu Aircraft Industrial Group, is a Chinese state-owned fighter manufacturer in Chengdu founded in 1958, best known for the J-10 and J-20 stealth fighter.
AVIC Heavy Machinery (中航重机)
AVIC Heavy Machinery (中航重机) is a Guiyang-based, Shanghai-listed Chinese aviation forging and casting company controlled by state-owned AVIC, supplying the C919, C929, Boeing, Airbus, Rolls-Royce, and Safran.
Aviceda Therapeutics
Aviceda Therapeutics, formerly Aviceda Ophthalmics, is a private clinical-stage biotechnology company in Cambridge, Massachusetts, founded in 2019, developing immunomodulators for eye disease, with lead candidate AVD-104 for geographic atrophy.
Avicenna
Avicenna, Arabic Ibn Sina (Abu Ali al-Husayn ibn Abdallah Ibn Sina), c. 980–1037, Persian polymath of Bukhara and Hamadan; author of the Canon of Medicine, Europe's primary medical textbook until the 17th century, and the Book of Healing in philosophy.
Avicennia
Avicennia is a genus of eight accepted species of mangrove trees and shrubs in the Acanthaceae family, distinguished by salt-secreting leaf glands, non-dormant seeds, and aerial roots.
Avicennia germinans
Avicennia germinans, black mangrove, is an Acanthaceae mangrove tree native from the SE United States and Caribbean to South America and West Tropical Africa to Angola, with pneumatophores, salt-excreting leaves, and major blue carbon storage.
AviChina Industry & Technology
AviChina Industry & Technology Company Limited is a Chinese state-controlled holding company making aircraft, components, and aviation engineering services through AVIC subsidiaries, listed in Hong Kong since 2003.
Avīci (अवीचि)
Avīci (अवीचि), also known as Avici Hell, is the lowest and most severe of the eight hot hells in Buddhist cosmology, where suffering continues without interruption.
Avicii
Avicii, stage name of Swedish DJ and producer Tim Bergling (1989–2018), rose to fame with "Levels" and "Wake Me Up" from the 2013 album True, retired from touring in 2016, and died by suicide in Oman; his family's Tim Bergling Foundation continues his mental-health legacy.
Avicii – I'm Tim
Avicii – I'm Tim (2024) is a Swedish Netflix documentary directed by Henrik Burman about DJ Tim Bergling, told in his own archival voice, premiering at Tribeca and on Netflix 31 December 2024.
Avicii Arena
Avicii Arena, colloquially Globen, is a multi-purpose indoor arena in southern Stockholm, opened in 1989 as the Stockholm Globe Arena and renamed for Avicii in 2021.
Avicii Forever
Avicii Forever is a posthumous greatest-hits compilation by Swedish DJ Avicii (Tim Bergling), released May 16, 2025 on Pinguettes/Universal, collecting hits like Wake Me Up and Levels plus the unreleased Let's Ride Away featuring Elle King.
Aviculopecten
Aviculopecten (McCoy, 1851) is an extinct Paleozoic pectinid bivalve genus, type species A. planoradiatus, family Aviculopectinidae, with inequivalve calcite/aragonite shells from Devonian to Permian rocks.
Aviculture
Aviculture is the keeping, rearing, and breeding of birds in captivity, from Latin avis (bird). Distinct from poultry farming; spans hobby bird keeping, exhibition, scientific ornithology, conservation breeding, and the commercial parrot trade regulated under CITES.
Avid Flyer
The Avid Flyer is a two-seat, strut-braced high-wing experimental amateur-built kit aircraft with folding wings, designed by Dean Wilson in Idaho and first flown in 1983.
Avid Media Composer
Avid Media Composer is a digital nonlinear editing system released by Avid Technology in 1989, invented by Bill Warner, and the standard editing platform for Hollywood feature films and television.