All articles A–Z
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Anesthetic
Anesthetic: drug preventing pain during surgery or procedures, as general (unconsciousness) or local/regional (numbing) agents. Key facts: 1846 ether demonstration, MAC potency measure, ion channel and membrane sites of action, agents like sevoflurane, propofol, ketamine.
Anesthetic complications and safety in animals
Anesthetic complications and safety in animals is the study of deaths and emergencies under veterinary anesthesia, with canine mortality near 0.17% to 0.69% and horses higher.
Anesthetic Hypnosis
Anesthetic hypnosis (hypnosedation, hypnoanesthesia): inducing a trance-like state to relieve surgical pain, historically used as sole anesthesia in the 1800s and now an evidence-supported adjunct reducing anxiety, pain, and drug use.
Anesthetists
Anesthetists are professionals trained and certified to administer anesthetics: physician anesthesiologists, nurse anesthetists (CRNAs), and anesthesiologist assistants. Covers training, certification, history since 1846, practice models, and safety evidence.
Anestis S. Veletsos
Anestis S. Veletsos (Anestis Stavrou Veletsos) was a civil engineer, born in Istanbul, who taught at Rice University and whose earthquake engineering research underlies modern seismic codes.
Aneta Corsaut
Aneta Corsaut (Aneta Louise Corsaut, 1933–1995), American actress from Hutchinson, Kansas, known as Helen Crump on The Andy Griffith Show (1963–1968) and as Jane Martin in The Blob (1958); later roles on The Blue Knight and Matlock.
Anethole
Anethole, also known as trans-anethole, is a natural aromatic compound that gives anise, star anise, and fennel their sweet licorice taste, used in foods, spirits, and perfumery.
Anethum
Anethum (dill genus), Apiaceae herbs native Sahara to India; type species Anethum graveolens, the culinary herb dill; genus size disputed, 2 to 8 accepted taxa.
Anetoderma
Anetoderma (macular atrophy) is a rare benign skin disorder with focal loss of dermal elastic tissue, causing flaccid wrinkled lesions; linked to antiphospholipid antibodies, autoimmune disease, penicillamine, and prematurity.
Anett Kontaveit
Anett Kontaveit, born 1995, is an Estonian former tennis player who reached a career-high world No. 2 in June 2022, the highest ever for an Estonian woman.
Anett Schuck
Anett Schuck, German sprint kayaker (born 1970, Leipzig, SC DHfK), won Olympic K4 500 m gold at Atlanta 1996 and Sydney 2000, plus world, European, and marathon titles.
Anette Hoffmann Møberg
Anette Hoffmann Møberg, born 1971, Danish handball left wing; two Olympic golds (1996, 2000), world title 1997, 183 caps and 641 national-team goals for Denmark.
Anette Kramme
Anette Kramme, born 1967, is a German politician of the SPD who has sat in the Bundestag since 1998 and became a Parliamentary State Secretary in 2013.
Anette Norberg
Anette Norberg, born 1966 in Härnösand, is a Swedish curler and skip who won Olympic gold in 2006 and 2010, the first skip to defend an Olympic curling title, plus three world and seven European championships.
Anette Olzon
Anette Olzon (Anette Ingegerd Olsson, born 1971) is a Swedish singer, Nightwish's second vocalist 2007–2012 on Dark Passion Play and Imaginaerum, later solo artist and frontwoman of The Dark Element and Allen/Olzon.
Aneuploidy
Aneuploidy: abnormal chromosome number from loss or duplication of individual chromosomes, not multiples of the haploid set. Causes miscarriage, birth defects, and cancer; detected by prenatal cfDNA screening, which can incidentally reveal maternal cancer.
Aneurin Barnard
Aneurin Barnard is a Welsh actor, born 1987 in Ogwr, Mid Glamorgan, Wales. A Royal Welsh College graduate and 2010 Laurence Olivier Award winner for Spring Awakening, he played Richard III in The White Queen, Gibson in Dunkirk, roles in 1899, Peaky Blinders, and Doctor Who.
Aneurin Bevan
Aneurin "Nye" Bevan (1897–1960), Welsh Labour MP for Ebbw Vale 1929–1960, was Minister of Health who created the National Health Service, launched 5 July 1948; he resigned in 1951 over NHS charges and became Labour deputy leader in 1959.
Aneurysm
Aneurysm: abnormal ballooning of a weakened artery wall, most often in the aorta or brain. Key facts: AAA defined at 3.0 cm, rupture mortality up to 81%, repair at 5.5 cm (men) or 5.0 cm (women), treated by open repair, EVAR, coiling, or clipping.
Aneurysm of pulmonary artery
Aneurysm of the pulmonary artery (PAA), pulmonary artery aneurysm, is a rare focal dilatation of all three wall layers of a pulmonary artery, usually the main trunk, linked to congenital heart disease, pulmonary hypertension, infection, and vasculitis, with rupture mortality of 50–100% and no formal management guidelines.
Aneurysm of sinus of Valsalva
Aneurysm of sinus of Valsalva (SOVA), sinus of Valsalva aneurysm, is a rare dilatation of an aortic sinus, congenital or acquired, that may rupture into right heart chambers; treated by surgical repair or transcatheter closure.
Aneurysm-osteoarthritis syndrome
Aneurysm-osteoarthritis syndrome (AOS), also Loeys-Dietz syndrome type 3, is a rare autosomal dominant SMAD3 (OMIM 613795) disorder combining arterial aneurysms, tortuosity, and dissection with early-onset osteoarthritis and mild craniofacial features.
Aneurysmal bone cyst
Aneurysmal bone cyst (ABC), also called ABC-like lesion, is a benign, locally aggressive blood-filled bone tumor of children and adolescents, USP6-driven when primary, treated by curettage, sclerotherapy, embolization, or denosumab.
Aneutronic fusion
Aneutronic fusion is nuclear fusion that releases its energy almost entirely as charged particles rather than neutrons, with proton–boron-11 and helium-3 fuels, promising cleaner reactors but harder ignition.
Aneyas Williams
Aneyas Williams, Notre Dame Fighting Irish running back from Hannibal, Missouri; 2023-24 Gatorade Missouri Player of the Year; junior lead back in 2026 with 67 carries for 294 yards and 4 touchdowns through six games.
Anez Cooper
Anez Cooper, New York Jets offensive guard, 2026 sixth-round pick (188th) from Miami (FL), four-year right guard, All-ACC honorable mention 2023 and 2024, born 2004 in Pleasant Grove, Alabama.
Anfal campaign (حملة الأنفال)
Anfal campaign (حملة الأنفال): eight-stage 1988 Ba'athist Iraqi military offensives against Iraqi Kurdistan's Kurds under Saddam Hussein and Ali Hassan al-Majid; killed an estimated 50,000-182,000 civilians and is legally recognized as genocide.
ANFAVEA
ANFAVEA (Associação Nacional dos Fabricantes de Veículos Automotores) is the Brazilian trade association of vehicle manufacturers, founded in 1956 and representing over 95% of national production.
Anfernee Simons
Anfernee Simons, NBA shooting guard born 1999; drafted 24th in 2018 by Portland, later Boston, Chicago, and Philadelphia 76ers; high-volume 38% three-point shooter.
Anfield
Anfield: football stadium in Liverpool, home of Liverpool FC since 1892 (previously Everton 1884-92). Capacity 61,276 after 2024 Anfield Road Stand rebuild; famous Spion Kop and Premier League-best atmosphere.