Search by letter: A
Search by letter
Search by letter: A
- Adjustment disorder
- Adjutant (military officer and appointment) Adjutant
- Adlai Stevenson II
- Adlai Stevenson III
- Adler Planetarium & Astronomy Museum
- Adligenswil — municipality in the canton of Lucerne, Switzerland Adligenswil
- Adlikon bei Andelfingen, Canton of Zürich Adlikon bei Andelfingen
- Adlington, Lancashire Adlington
- Adliswil — municipality in the Sihl Valley, canton of Zürich Adliswil
- Adly Mansour — Egyptian judge and interim president (2013–2014) Adly Mansour
- Administration
- Administrative centre
- Administrative county
- Administrative division
- Administrative divisions of Azerbaijan 59 districts
- Administrative divisions of Croatia: counties, cities, municipalities, and settlements Administrative divisions of Croatia
- Administrative divisions of Iran
- Administrative divisions of Mexico: states, Mexico City and municipalities Administrative divisions of Mexico
- Administrative divisions of Nepal
- Administrative law: principles, structure, and practical importance Administrative law
- Subnational divisions of Pakistan: provinces, territories and administered Kashmir Administrative units of Pakistan
- Administrator: roles, types, and responsibilities Administrator
- Administrator of NASA
- Administrator of Norfolk Island
- Administrator of the Environmental Protection Agency
- Administrator of the Northern Territory
- Administrator of the U.S. Small Business Administration Administrator of the Small Business Administration
- Admiral: Senior Naval Rank — Meaning, History, and Usage Admiral
- Admiralty (British naval administration) Admiralty
- Admiralty MRT station (NS10) — Woodlands, Singapore Admiralty MRT station
- Admire, Kansas
- Admission (2013 film) Admission
- Admission to the Union (U.S. Constitution) Admission to the Union
- Adnan Gulshair el Shukrijumah
- Adnan Khashoggi: Saudi businessman and international arms broker Adnan Khashoggi
- Adnan al‑Pachachi: Iraqi diplomat and elder statesman Adnan Pachachi
- Ado — meanings, names, acronyms and notable uses Ado
- Ado Bayero, Emir of Kano (1963–2014) Ado Bayero
- Adobe (mudbrick): traditional earth construction, types, and uses Adobe
- Adobe Acrobat: overview, features, history and usage Adobe Acrobat
- Adobe After Effects — Motion Graphics and Visual Effects Software Adobe After Effects
- Adobe Dreamweaver — visual and code web design application Adobe Dreamweaver
- Adobe Flash (Adobe Animate): history, features, uses, decline, and legacy Adobe Flash
- Adobe Illustrator — vector graphics and illustration software Adobe Illustrator
- Adobe Inc.
- Adobe Photoshop — overview, features, history and common uses Adobe Photoshop
- Adolescence: the transition from childhood to adulthood Adolescence
- Adolf Anderssen — 19th-century German chess master and problemist Adolf Anderssen
- Adolf Born: Czech illustrator, painter, caricaturist and animator Adolf Born
- Adolf "Adi" Dassler — Founder of Adidas Adolf Dassler
- Adolf Eichmann — Nazi SS official and organizer of deportations (1906–1962) Adolf Eichmann
- Adolf Frederick of Sweden (1710–1771): figurehead monarch of the Age of Liberty Adolf Frederick of Sweden
- Adolf Grünbaum — Philosopher of Science and Critic of Psychoanalysis Adolf Grünbaum
- Adolf Hitler politician and the leader of the Nazi Party
- Adolf Holl — Austrian Catholic Writer and Theologian Adolf Holl
- Adolf von Henselt: pianist, composer and 19th-century keyboard stylist Adolf von Henselt
- Adolfo Celi (1922–1986) — Italian actor and director Adolfo Celi
- Adolfo Mexiac (1927–2019) Adolfo Mexiac
- Adolfo Nicolás
- Adolfo Pajares Compostizo — Spanish businessman and regional politician Adolfo Pajares
- Adolfo Pérez Esquivel
- Adolfo Rodríguez Saá
- Adolfo Suárez — Architect of Spain's Transition to Democracy Adolfo Suárez
- Adolfo Suárez Madrid–Barajas Airport
- Adolph Cornelis van Bruggen — Dutch malacologist and tropical naturalist Adolph Cornelis van Bruggen
- Adolph Kiefer: Olympic Champion, Inventor, and Swimming Advocate Adolph Kiefer
- Adolph Rupp: Life, coaching career, and legacy Adolph Rupp
- Adolphe Adam (1803–1856): French composer of ballets, operas and songs Adolphe Adam
- Adolphe Dugléré
- Adolphe Nourrit: French tenor, librettist and influential figure in early Romantic opera Adolphe Nourrit
- Adolphe Sax
- Adolphe Thiers: French statesman and historian, first President of the Third Republic Adolphe Thiers
- Adolphe‑Marie Hardy: Belgian French‑language Writer (1868–1954) Adolphe-Marie Hardy
- Adolphe, Grand Duke of Luxembourg (1817–1905) Adolphe, Grand Duke of Luxembourg
- Adon, Loiret — French commune Adon, Loiret
- Adonis: Greek god of beauty, desire, and seasonal rebirth Adonis
- Adoption (child) — overview, types, process and social aspects Adoption
- Adoram Keisi — Israeli footballer and notable left back Adoram Keisi
- Adour: river of southwestern France Adour
- Adrar Province, Algeria Adrar Province
- Adrastea (Jupiter moon) Adrastea (moon)
- Adrastus (genus of click beetles) Adrastus (genus)
- Adrenal gland: structure, hormones, and clinical significance Adrenal gland
- Adrenal tumor (adrenal mass): overview, types, diagnosis and management Adrenal tumor
- Adrenaline (Deftones album) Adrenaline (album)
- Adrenoleukodystrophy (ALD): causes, symptoms, diagnosis and care Adrenoleukodystrophy
- Adria Airways — Slovenia’s former national airline (1961–2019) Adria Airways
- Adria Arjona — American-Guatemalan actress Adria Arjona
- Adriaan Blaauw: Dutch astronomer and leader in stellar kinematics Adriaan Blaauw
- Adriaen Coorte — Dutch painter of intimate still lifes Adriaen Coorte
- Adrian Boult (1889–1983) — English conductor and champion of British music Adrian Boult
- Sir Adrian Cadbury Adrian Cadbury
- Adrian Cronauer (1938–2018) Adrian Cronauer
- Adrian Dix
- Adrian Edmondson: English comedian, actor and musician Adrian Edmondson
- Adrian Fenty
- Adrian Frutiger — Swiss Type Designer (1928–2015) Adrian Frutiger
- Adrian Hardiman — Irish Supreme Court justice and jurist Adrian Hardiman
- Adrian Hasler
- Adrian Ilie — Romanian footballer and striker Adrian Ilie
- Adrian Lamo: hacker, security analyst, and Chelsea Manning informant Adrian Lamo
- Adrian Mutu
- Adrian Năstase: Romanian politician and former prime minister Adrian Năstase
- Adrian Peterson
- Adrian Rogers
- Adrian Smith — English guitarist, singer and songwriter Adrian Smith
- Adrian Smith — American architect known for landmark skyscrapers Adrian Smith (architect)
- Adrian Smith (basketball) — American point guard and 1966 All‑Star MVP Adrian Smith (basketball)
- Adrian Sutil — German Formula One racing driver Adrian Sutil
- Adrian Willaert: Flemish Master of the Venetian School Adrian Willaert
- Adrian, Texas
- Adrian, Wisconsin (town in Monroe County) Adrian, Wisconsin
- Adriana Benetti: Italian film actress (1919–2016) Adriana Benetti
- Adriana Campos: Colombian television, film and stage actress (1979–2015) Adriana Campos
- Adriana Caselotti — voice of Snow White Adriana Caselotti
- Adriana Lecouvreur: Cilea's enduring lyric drama Adriana Lecouvreur
- Adriana Lima: Brazilian Supermodel and Longtime Victoria's Secret Icon Adriana Lima
- Adrianne Palicki — American actress and action performer Adrianne Palicki
- Adriano Celentano
- Adriano Correia Claro
- Adriano Emperado — Co‑founder of Kajukenbo Adriano Emperado
- Adriano Leite Ribeiro
- Adriano Ossicini: Italian politician and academic (1920–2019) Adriano Ossicini
- Adrianus Johannes Simonis, Dutch Cardinal and Archbishop of Utrecht Adrianus Johannes Simonis
- Adriatic Sea — geography, ecology and human uses Adriatic Sea
- Adrien Brody, Oscar-winning American actor Adrien Brody
- Adrien Maurice de Noailles, 3rd Duke of Noailles — French soldier and statesman Adrien Maurice de Noailles, Duke of Noailles
- Adrienne Barbeau: American Actress, Singer, and Writer Adrienne Barbeau
- Adrienne Clarkson
- Adrienne Corri (1930–2016) Adrienne Corri
- Adrienne de La Fayette (Marie Adrienne Françoise de Noailles) Adrienne de La Fayette
- Adrienne Jablanczy — French economist, educator, and leader in business school management Adrienne Jablanczy
- Adrienne Rich: American Poet, Essayist and Feminist Voice Adrienne Rich
- Adrienne Shelly: filmmaker, actress, and screenwriter Adrienne Shelly
- Adsorption: Surface binding of atoms and molecules Adsorption
- Adult: legal, biological, and cultural meanings Adult
- Adult Contemporary (music format and Billboard chart) Adult Contemporary
- Adult Swim: Overview of Cartoon Network’s Late‑Night Programming Block Adult Swim
- Adultery: definition, etymology, legal status, religious views and social impact Adultery
- Advaita Vedanta
- Advance — meanings, uses, and distinctions Advance
- Advance Australia Fair — origins, adoption, and cultural significance Advance Australia Fair
- Advance Auto Parts Clash
- Advance Wars (Game Boy Advance) Advance Wars
- Advanced Encryption Standard (AES) Advanced Encryption Standard
- Advanced Gas-cooled Reactor (AGR) — British graphite–CO2 nuclear design Advanced gas-cooled reactor
- Advanced Light Source — synchrotron facility at Lawrence Berkeley National Laboratory Advanced Light Source
- Advanced Micro Devices (AMD): Overview, products, and history Advanced Micro Devices
- Advanced Packaging Tool (APT) Advanced Packaging Tool
- Advanced Passenger Train (APT) Advanced Passenger Train
- Advanced Photo System (APS): film format, features, history and decline Advanced Photo System
- Advanced Placement Program (AP) Advanced Placement Program
- Advanced Technician in Aviation (non civil servant) Advanced Technician in Aviation non civil servant
- Advent (Christian liturgical season) Advent
- Advent calendar: origins, types, traditions, and modern uses Advent calendar
- Adventure: definition, types, history and cultural significance Adventure
- Adventure fiction: definition, history, and key characteristics Adventure fiction
- Adventure game (video game genre) Adventure game
- Adventure film: genre, history, and defining features Adventure movie
- Adventure Time (animated television series) Adventure Time
- Adventure's End (1937 film) Adventure's End
- Adventureland (2009 film) — coming-of-age comedy-drama set in 1987 Adventureland (movie)
- Adventures in Odyssey
- Adventures of Captain Marvel (1941 serial) Adventures of Captain Marvel
- Adventures of Huckleberry Finn
- Adverb: definition, forms, uses, and examples Adverb
- Adversarial system (legal adversary model) Adversarial system
- Adverse effect (medicine): causes, classification and management Adverse effect (medicine)
- Advertising: purpose, channels, creative process, and social effects Advertising
- Advice
- Advice (constitutional)
- Advice column: format, history, and cultural role Advice column
- Advisor (Adviser): Role, Types, and Importance Advisor
- Advocacy: Public Support, Methods, Actors, and Impact Advocacy
- Adware — software that displays ads and may collect user information Adware
- Adyar River (Chennai, India) Adyar River
- Adyar, Chennai: neighbourhood, estuary and institutional centre Adyar, Chennai
- Adyghe language (Adygebze) — Circassian language of the Northwest Caucasus Adyghe language
- Adze: traditional woodworking tool for shaping and hollowing timber Adze
- Aeacus — King of Aegina and Judge in the Afterlife Aeacus
- Aebtissinwisch, Steinburg (Schleswig-Holstein) Aebtissinwisch
- Áed mac Cináeda — King of the Picts (877–878) Áed, king of Scots
- Aedermannsdorf — Municipality in Thal District, Canton of Solothurn Aedermannsdorf
- Aedes (mosquito): description, biology, public health significance Aedes
- Aedes aegypti — the yellow fever mosquito: biology, distribution, and public health Aedes aegypti
- Aefligen: Swiss municipality in the Emmental region of Canton Bern Aefligen
- Aegaeon (moon)
- Aegean cat
- Aegean Sea: Geography, history, and modern significance Aegean Sea
- Aegerten: Municipality in the Biel/Bienne District of Canton Bern Aegerten
- Aegeus — King of Athens in Greek mythology Aegeus
- Aegir (Saturn XXXVI) Aegir (moon)
- Aegis — Shield and Symbol in Greek Mythology Aegis
- Aegisthus (Greek mythological figure) Aegisthus
- Aegukga — The national anthem of South Korea Aegukga
- Aegukka — The National Anthem of North Korea Aegukka
- Aegyptosaurus — African titanosaurian sauropod Aegyptosaurus
- Marcus Aemilius Aemilianus (Aemilian) — Roman emperor, 253 AD Aemilianus
- Aeneas: Trojan prince, epic hero, and ancestor of Rome Aeneas
- The Aeneid — Virgil's Latin epic of Aeneas and Rome's origins Aeneid
- Aeolian Islands (Lipari Islands) — volcanic archipelago north of Sicily Aeolian Islands
- Aeolian processes: wind-driven erosion, transport and deposition Aeolian processes
- Aeolic Greek
- Aeolosaurus — Late Cretaceous titanosaur from South America Aeolosaurus
- Aeolus — Greek mythological ruler of the winds Aeolus
- Aepyornis — extinct elephant bird of Madagascar Aepyornis
- Aer Lingus: Ireland's flag carrier airline Aer Lingus
- Aerial Acres, California — unincorporated community in Kern County Aerial Acres, California
- Aerial root
- Aerial warfare: concepts, aircraft roles, history and effects Aerial warfare
- Aero Caribbean Flight 883
- Aero Space Museum (Calgary) Aero Space Museum
- Aéro-Club de France: history, role and legacy of the world's oldest aeronautical institution Aéro-Club de France
- Aerobic: oxygen-dependent processes, organisms, and exercise Aerobic
- Aerobic organism
- Aerobics: rhythmic fitness, formats, benefits, and historical development Aerobics
- Aérocentre — Aerospace cluster of Centre‑Val de Loire, France Aérocentre
- Principles of Aerodynamics: Airflow, Lift, Drag, and Vehicle Design Aerodynamics
- Aeroflot — Russian Flag Carrier and Long-Established Airline Aeroflot
- Aeroflot Flight 1492 — 2019 Sukhoi Superjet 100 emergency landing and fire Aeroflot Flight 1492
- Aerogel: ultralight, highly insulating porous solids Aerogel
- Aerolíneas Argentinas
- Aeroméxico (Aerovías de México) — Mexican flag carrier Aeroméxico
- Aeronautical Literary Festival (Salon du livre aéronautique) Aeronautical literary festival
- Aeronautical operations technician (Technicien aéronautique d'exploitation) Aeronautical operations technician
- Aeronautics: Principles, History, and Applications Aeronautics
- AeronautX Luftfahrtschule — flight training school in Linz, Austria AeronautX Luftfahrtschule
- Aeronwy Thomas (1943–2009) Aeronwy Thomas
- Aerosmith: American rock band known for blues‑based hard rock and enduring hits Aerosmith
- Aerosol: suspensions of particles or droplets in a gas Aerosol
- Aerosol spray: design, operation, uses and safety Aerosol spray
- Aerospace engineering: principles, subfields, and careers Aerospace engineering
- Aerospace Valley — France’s aeronautics and space cluster in southwest France Aerospace Valley
- Aérospatiale SA-321 Super Frelon
- Aérospatiale SA-330 Puma: French medium-lift transport helicopter Aérospatiale SA-330 Puma
- Aerostatics: Principles, History, and Practical Uses Aerostatics
- Aesch (Switzerland) Aesch
- Aesch (Basel-Landschaft) Aesch, Basel-Landschaft
- Aesch (Lucerne) — municipality in the Hochdorf district Aesch, Lucerne
- Aesch, Zürich
- Aeschi (Wasseramt, Solothurn) — municipality overview Aeschi
- Aeschi bei Spiez — municipality in the canton of Bern, Switzerland Aeschi bei Spiez
- Aeschlen bei Oberdiessbach — former municipality in the canton of Bern Aeschlen bei Oberdiessbach
- Aeschylus: Pioneer of Greek Tragedy and Author of the Oresteia Aeschylus
- Aesculus glabra (Ohio buckeye): description, range, and significance Aesculus glabra
- Aescwine of Wessex (7th-century West Saxon king) Aescwine of Wessex
- Aesop: Legendary Fabulist of Ancient Greece and the Tradition of Fables Aesop
- Aesop Rock (Ian Matthias Bavitz) Aesop Rock
- Aesthetics
- Aestivation: summer dormancy and survival strategies in animals Aestivation
- Æthelbald of Mercia (d. 757) — King and Mercian Overlord Aethelbald of Mercia
- Æthelred I of Mercia Aethelred I of Mercia
- Æthelthryth (Etheldreda): Anglo-Saxon princess and abbess of Ely Aethelthryth
- Aether — Greek primordial deity and the upper air Aether
- Aetigkofen — former Swiss municipality in Buchegg, canton Solothurn Aetigkofen
- Aetingen: former Swiss village in the Bucheggberg district Aetingen
- Aeugst am Albis — municipality in the canton of Zürich Aeugst am Albis
- Afa Anoaʻi — Samoan American wrestler, tag team legend and trainer Afa Anoaʻi
- Afar language (Qafaraf) — an East Cushitic language of the Horn of Africa Afar language
- Afar Region (Ethiopia) Afar Region
- Afar Triangle (Afar Depression) Afar Triangle
- AFC Ajax — Amsterdam's historic football club and academy AFC Ajax
- AFC Asian Cup
- AFC Champions League — Asia’s premier club football competition AFC Champions League
- AFC Cup: Asia's secondary club football competition AFC Cup
- AFC Door Wilskracht Sterk (DWS) — Dutch football club AFC Door Wilskracht Sterk
- AFC East — NFL Division Overview AFC East
- AFC North (National Football League division) AFC North
- AFC Women's Asian Cup
- Afelia: Cypriot pork in red wine and coriander Afelia
- Afeni Shakur — Black Panther, activist, and steward of Tupac's legacy Afeni Shakur
- Afet İnan — Turkish historian and sociologist Afet İnan
- Affair of the Diamond Necklace (1784–1785) Affair of the Diamond Necklace
- Affeltrangen, Thurgau — Swiss municipality overview Affeltrangen
- Affenpinscher — small German toy dog breed Affenpinscher
- Affinity (kinship by marriage) Affinity
- Affirmative action (positive discrimination) Affirmative action
- Affixation in Linguistics: Types, Functions, and Cross-Linguistic Patterns Affix
- Affliction (1997 film) Affliction (movie)
- Affligem (Flemish Brabant, Belgium) Affligem
- Affoltern (Zürich): quarter in district 11 Affoltern (Zürich)
- Affoltern am Albis: Swiss municipality in the canton of Zürich Affoltern am Albis
- Affoltern District (Knonaueramt / Säuliamt) Affoltern District
- Affoltern im Emmental — municipality in the Emmental region of Bern, Switzerland Affoltern im Emmental
- Affordable Care Act (Obamacare) Affordable Care Act
- Affordable housing: concepts, causes, policy responses, and notable examples Affordable housing
- Affricate (speech sound) Affricate
- Affringues — small commune in Pas-de-Calais, northern France Affringues
- Afghani — currency of Afghanistan Afghan afghani
- Afghan Hound
- Afghan National Anthem (Millî Surûd) Afghan National Anthem
- Afghanistan: geography, history, society, and contemporary issues Afghanistan
- Afghanistan at the Olympics
- Afghanistan national football team
- AFI (acronym): common meanings and contexts AFI
- AFI (A Fire Inside) — American rock band from Ukiah, California AFI (band)
- AFI's 100 Years of Musicals (2006) AFI's 100 Years of Musicals
- AFI's 100 Years... 100 Laughs
- AFI's 100 Years...100 Movies — the American Film Institute's 1998 Top Films List AFI's 100 Years... 100 Movies
- AFI's 100 Years...100 Stars AFI's 100 Years... 100 Stars