Search by letter: A
Search by letter
Search by letter: A
- Apremont (Vendée) — commune in Pays de la Loire, France Apremont, Vendée
- Apricot
- Apricot (color)
- April the fourth month of the year in the Julian and Gregorian calendars
- April 1
- April 10
- April 11
- April 12
- April 13
- April 14
- April 15
- April 16
- April 17 — calendar date, observances and notable events April 17
- April 18
- April 19
- April 2 — calendar position, observances and notable facts April 2
- April 20 — calendar placement, observances, and notable events April 20
- April 2015 Nepal earthquake (Gorkha earthquake) April 2015 Nepal earthquake
- April 2017 Champs-Élysées attack
- April 2018 inter-Korean summit — Panmunjom meeting between Moon Jae-in and Kim Jong‑un April 2018 inter-Korean summit
- April 21
- April 22
- April 23
- April 24 (calendar date) April 24
- April 25
- April 26 — calendar facts, notable events, births and observances April 26
- April 27
- April 28
- April 29
- April 3
- April 30
- April 4 — position in the year, observances and notable events April 4
- April 5
- April 6
- April 7
- April 8
- April 9
- April Ashley: English model and early transgender pioneer April Ashley
- April Fools' Day: traditions, history, and modern practices April Fools' Day
- April Love (1957 film) April Love (movie)
- April Pearson
- April Winchell: American Voice Actor, Writer, Radio Host and Comedian April Winchell
- Apron: design, history, types, uses and cultural significance Apron
- Apse (architectural feature) Apse
- Apsis (astronomy): periapsis, apoapsis, and the line of apsides Apsis
- Apt (Vaucluse, Provence-Alpes-Côte d'Azur) Apt, Vaucluse
- Apterygota: primitive wingless insects (bristletails and silverfish) Apterygota
- APTonCD — creating portable Debian/Ubuntu package repositories APTonCD
- Apuleius: Roman-era novelist, rhetorician and philosopher Apuleius
- Apulia (Puglia): region of southern Italy Apulia
- Apure (state of Venezuela) Apure
- Apurímac Region, Peru Apurímac Region
- Apus — the southern constellation of the Bird‑of‑Paradise Apus
- Aputula: remote Aboriginal community (formerly Finke) in Australia's Northern Territory Aputula
- Aqaba: Jordan’s historic port city on the Red Sea Aqaba
- Aqaba Governorate
- Kitáb-i-Aqdas (The Aqdas) — The Most Holy Book of the Bahá'í Faith Aqdas
- Aqua: word, color, and common uses Aqua
- Aqua (band) — Danish‑Norwegian dance‑pop group Aqua (band)
- Aqua (skyscraper)
- Aqua regia: composition, chemistry, history and applications Aqua regia
- Aqua Teen Hunger Force animated comedy television series that is shown on Cartoon Network
- Aqua Teen Hunger Force Colon Movie Film for Theaters (2007) Aqua Teen Hunger Force Colon Movie Film for Theaters
- Aqua Timez — Japanese pop-rock band Aqua Timez
- Aquaculture: farming of fish, shellfish, and aquatic plants Aquaculture
- Aquaman — DC Comics oceanic superhero Aquaman
- Aquaman (2018 film) — overview, production, cast, and reception Aquaman (movie)
- Aquamarine (gemstone) Aquamarine
- Aquamarine (color)
- Aquanaut: underwater resident — history, roles, physiology and habitats Aquanaut
- Aquarium
- Aquarium (Аквариум) — influential Russian rock band formed in Leningrad Aquarium (group)
- Aquarius (astrology): Sign, traits, history, and meaning Aquarius (astrology)
- Aquarius (constellation): the Water-Bearer of the sky Aquarius (constellation)
- Aquatic: organisms, habitats, and key characteristics Aquatic
- Aquatic locomotion: principles, modes, and evolutionary context Aquatic locomotion
- Aquatic plant: types, adaptations, roles and uses Aquatic plant
- Aqueduct
- Aqueous solution
- Aquí (Julieta Venegas album) Aquí
- Aquia Creek, Virginia Aquia Creek
- Aquifer: underground water-bearing formations and their importance Aquifer
- Aquificaceae: thermophilic bacteria of hot springs and hydrothermal systems Aquificaceae
- Aquificae: Thermophilic, Chemolithoautotrophic Bacteria of Hot Environments Aquificae
- Aquila (constellation)
- Aquila (Ticino) — former municipality in the Blenio Valley, Switzerland Aquila, Switzerland
- Aquilegia (columbine): spurred perennial flowers of the Northern Hemisphere Aquilegia
- Aquilino Pimentel Jr.: Filipino statesman and reform advocate Aquilino Pimentel Jr.
- Aquilops — an early North American ceratopsian Aquilops
- Aquitaine (southwestern France region) Aquitaine
- Ar-Raqqah (Raqqa): city on the middle Euphrates Ar-Raqqah
- AR-15 rifle: history, design, variants, uses, and legal considerations AR15
- Ara (constellation) — the southern altar in the sky Ara (constellation)
- Ara Gevorgyan
- Ara Güler: the 'Eye of Istanbul' and Armenian‑Turkish photojournalist Ara Güler
- Ara Parseghian — American College Football Coach and Notre Dame Leader Ara Parseghian
- Arab Christians: identity, history and contemporary communities Arab Christians
- Arab Israelis: overview, demographics, history and identity Arab Israelis
- Arab League: regional organization of Arab states Arab League
- Arabs: people, language, culture and history Arab people
- Arab Revolt (1916–1918): revolt, campaigns and aftermath Arab Revolt
- Arab slave trade: scope, routes, and historical impact Arab slave trade
- Arab Spring: the 2010–2012 protest wave across the Arab world Arab Spring
- Arab Winter: the post‑2011 backlash and regional instability Arab Winter
- Arab world: geography, language, history and contemporary significance Arab world
- Arab–Israeli conflict: origins, major events, and contemporary overview Arab–Israeli conflict
- Arab, Alabama
- Arabesque: the foliate ornamental style in Islamic and European decorative art Arabesque
- Arabesque (1966 film) Arabesque (1966 movie)
- Arabesque (ballet)
- Arabesque (German disco trio) Arabesque (group)
- Arabian Desert: geography, ecology, and human presence Arabian Desert
- Arabian Gulf
- Arabian horse: history, characteristics, and cultural importance Arabian horse
- Arabian Peninsula: geography, history, and significance Arabian Peninsula
- Arabian Sea: Geography, Ecology, History and Strategic Importance Arabian Sea
- Arabic: language, script, dialects, and cultural role Arabic
- Arabic alphabet
- Arabic language (al-ʿarabiyyah) Arabic language
- Arabic Wikipedia
- Arabidopsis thaliana: a model plant for genetics and molecular biology Arabidopsis thaliana
- Arabinda Muduli
- Arable Land: Definition, Characteristics, Uses, and Management Arable land
- Aracaju — capital of Sergipe, Brazil Aracaju
- Aracataca (Magdalena, Colombia) Aracataca
- Araceae (Arum family): characteristics, ecology, uses, and notable genera Araceae
- Arachne: the weaver punished and transformed in Greek myth Arachne
- Arachnid: overview, anatomy, diversity and role in ecosystems Arachnid
- Arachnocampa — glowworm fungus gnats Arachnocampa
- Arachnology: the scientific study of arachnids Arachnology
- Arachnophobia — fear of spiders, symptoms, causes, and treatment Arachnophobia
- Arad County, Romania: geography, history, economy and culture Arad County
- Arad Productions Inc. Arad Productions
- Arad, Iran — city in Fars Province and capital of Arad District Arad, Iran
- Arad, Romania: city overview, history, and landmarks Arad, Romania
- Arado Ar 234 — Germany's first operational jet bomber Arado Ar 234
- Arafura Sea — shallow sea between Australia and New Guinea Arafura Sea
- Aragatsotn Province, Armenia Aragatsotn Province
- Aragon: geography, history and culture of the Spanish community Aragon
- Aragón River Aragón (river)
- Aragon, Aude — a small commune in southern France Aragon, Aude
- Aragonese language (Aragonés) Aragonese language
- Aragonese Party (Partido Aragonés) Aragonese Party
- Aragonese Wikipedia (Biquipedia) Aragonese Wikipedia
- Arain — Muslim agricultural community of South Asia Arain
- Arak County, Markazi Province (Iran) Arak County
- Arakanese (Rakhine) people: history, language, and distribution Arakanese people
- Arakawa River — Tokyo's major river and its role in the metropolis Arakawa River
- Arakawa, Tokyo: overview, character, history and notable features Arakawa, Tokyo
- Aral Sea: history, collapse, environmental impacts and recovery efforts Aral Sea
- Arale Norimaki
- Araliaceae: the ivy family — diversity, features, and uses Araliaceae
- Araluen, New South Wales — town in the Southern Tablelands Araluen, New South Wales
- Aram Khachaturian: Armenian-Soviet Composer and Orchestral Innovator Aram Khachaturian
- Aram Mp3 (Aram Sargsyan) — Armenian singer, comedian and performer Aram Mp3
- Aram Shah — Brief ruler of the early Mamluk (Slave) dynasty Aram Shah
- Aramaic alphabet
- Aramaic language — history, script, dialects and modern use Aramaic language
- Aromatic Polyamides (Aramids): Structure, Properties, and Applications Aramid
- Aramits — commune in Pyrénées-Atlantiques, Nouvelle-Aquitaine Aramits
- Aran Economic Region (Central Azerbaijan) Aran Economic Region
- Aranc — small commune in Ain, Auvergne-Rhône-Alpes Aranc
- Arancou (Pyrénées-Atlantiques, France) Arancou
- Arandas (Ain) — Commune in Auvergne-Rhône-Alpes, France Arandas, Ain
- Araneomorphae — the modern 'true' spiders Araneomorphae
- Arang Kel: hill village and tourist viewpoint in Neelum Valley Arang Kel
- Aranno (Ticino) Aranno
- Aransas County, Texas
- Aransas Pass, Texas
- Arantxa Sánchez Vicario: Spanish tennis champion and clay‑court specialist Arantxa Sánchez Vicario
- Aranyaka — Vedic 'forest' texts of ritual interpretation and philosophy Aranyaka
- Arapaho people Arapaho
- Arapaho language
- Arapaho, Oklahoma — Town and County Seat of Custer County Arapaho, Oklahoma
- Arapahoe County, Colorado
- Arapaima (pirarucu, paiche): Large Amazonian bonytongue fish Arapaima
- Arara (Paraíba) — municipality in northeastern Brazil Arara, Paraíba
- Ararat Province (Armenia): geography, history, economy and landmarks Ararat Province
- Ararat, Victoria
- Áras an Uachtaráin — official residence of the President of Ireland Áras an Uachtaráin
- Arasalar River — distributary of the Kaveri (Cauvery) Arasalar River
- Arashi — Japanese boy band: history, members, and cultural impact Arashi
- Arata Isozaki — Japanese architect and influential designer Arata Isozaki
- Arata Izumi: Japanese‑born footballer who represented India Arata Izumi
- Arata Kodama (Japanese footballer) Arata Kodama
- Arata Sugiyama: Japanese professional footballer for Omiya Ardija (born 1980) Arata Sugiyama
- Arauca Department
- Araucanía (IX Region of Chile): geography, culture and economy Araucanía Region
- Araucaria: ancient conifer genus and its natural history Araucaria
- Araucaria heterophylla (Norfolk Island Pine) Araucaria heterophylla
- Arauco Province (Bío Bío Region, Chile) Arauco Province
- Arauco War: Mapuche resistance against Spanish colonial rule Arauco War
- Araujuzon — commune in Pyrénées-Atlantiques, France Araujuzon
- Araux: A commune in Pyrénées-Atlantiques, southwestern France Araux
- Arawa Kimura (1931–2007) Arawa Kimura
- Arawak peoples: history, languages, and surviving communities Arawak people
- Arbana Xharra: Kosovan investigative journalist and 2015 International Women of Courage awardee Arbana Xharra
- Arbanats — commune in Gironde, Nouvelle‑Aquitaine, France Arbanats
- Arbaz — Municipality in the canton of Valais, Switzerland Arbaz
- Arbedo-Castione: municipality in the Bellinzona district, Ticino, Switzerland Arbedo-Castione
- Arbent — commune in Ain, Auvergne-Rhône-Alpes, France Arbent
- Arbérats-Sillègue — Commune in Pyrénées-Atlantiques, France Arbérats-Sillègue
- Arbignieu — former commune in Ain, France Arbignieu
- Arbigny — commune in Ain, Auvergne-Rhône-Alpes, France Arbigny
- Arbis (Gironde) — former commune in southwest France Arbis
- Arbitration (Alternative Dispute Resolution) Arbitration
- Arboga — historic town and municipal seat in Västmanland, Sweden Arboga
- Arboga Municipality
- Arboldswil: a Swiss municipality in Waldenburg, Basel-Landschaft Arboldswil
- Arbon, Switzerland: Lakeside Town and District Capital in Thurgau Arbon
- Arbon District, Canton of Thurgau (Switzerland) Arbon District
- Arbon Valley, Idaho
- Arbon, Idaho — an overview of an unincorporated community Arbon, Idaho
- Arbonne, commune in Pyrénées-Atlantiques Arbonne
- Arbore (commune in Suceava County, Romania) Arbore
- Arborea — town and comune in the Province of Oristano, Sardinia Arborea
- Arboreal: living in trees — definition, adaptations, and significance Arboreal
- Arboriculture: The Science and Practice of Caring for Trees and Shrubs Arboriculture
- Arbouet-Sussaute
- Arboys-en-Bugey — Commune in Ain, Auvergne-Rhône-Alpes, France Arboys-en-Bugey
- Arbroath F.C.: history, identity and notable records Arbroath F.C.
- Arbuckle Mountains — an ancient Oklahoma range Arbuckle Mountains
- Arbus (Pyrénées-Atlantiques) — a rural commune in southwestern France Arbus, Pyrénées-Atlantiques
- Arby's: American sandwich chain known for roast beef and curly fries Arby's
- Arc (geometry) — definition, types, and arc length Arc
- Arc de Triomphe (Paris) Arc de Triomphe
- Arc flash: causes, hazards, prevention and standards Arc flash
- Arc welding: principles, processes, history, uses, and safety Arc welding
- Arcachon — seaside town and resort on France’s Atlantic coast Arcachon
- Arcade (architecture) Arcade
- Arcade Fire: overview, history, style, and notable works Arcade Fire
- Arcade game
- Arcadia (Peloponnese, Greece): geography, history and culture Arcadia
- Arcadia Publishing
- Arcadia, Florida — city and county seat of DeSoto County Arcadia, Florida
- Arcadia, Indiana — small town in Hamilton County, central Indiana Arcadia, Indiana
- Arcadia, Iowa: small city in Audubon County Arcadia, Iowa
- Arcadia, Kansas
- Arcadia, Louisiana
- Arcadia, Oklahoma: small town history, Route 66 landmark, and local profile Arcadia, Oklahoma
- Arcadia, Wisconsin
- Arcangelo Corelli: Baroque violinist, composer, and influence on instrumental music Arcangelo Corelli
- Arcangues (commune in Pyrénées-Atlantiques, France) Arcangues
- Arcata, California
- Arcenant — commune in Côte-d'Or, Bourgogne-Franche-Comté Arcenant
- Arcens — a rural commune in Ardèche, France Arcens
- Arces-Dilo — a rural commune in Yonne, Bourgogne-Franche-Comté Arces-Dilo
- Architectural Arches: Forms, Mechanics, and Uses Arch
- Arch bridge bridge with abutments at each end shaped as a curved arch
- Arch Enemy — Swedish melodic death metal band Arch Enemy
- Arch Linux: a lightweight, rolling‑release Linux distribution Arch Linux
- Arch of Constantine
- Arch of Triumph (1948 film) Arch of Triumph (1948 movie)
- Arch, Switzerland
- Archaea
- Archaean Eon: Earth's early geologic era of first rocks and life Archaean
- Archaefructus: an early aquatic flowering-plant genus Archaefructus
- Archaeobatrachia: primitive frogs and their biology Archaeobatrachia
- Archaeoceti — early whales and the transition from land to sea Archaeoceti
- Archaeocyatha: Cambrian reef-building sponge-like organisms Archaeocyatha
- Archaeognatha — jumping bristletails, primitive wingless insects Archaeognatha
- Archaeological Site: Definition, Investigation, and Significance Archaeological site
- Archaeology: study, methods, history, and significance Archaeology
- Archaeopteryx: early birdlike dinosaur of the Late Jurassic Archaeopteryx
- Archaeothyris: an early synapsid from the Late Carboniferous Archaeothyris
- Archaeozoology: the study of animals in archaeological contexts Archaeozoology
- Archaic Greece: formation, society, art, and legacy (c. 800–480 BCE) Archaic Greece
- Archaic period (North America)
- Archail — small mountain commune in Alpes-de-Haute-Provence Archail
- Archamoebae: mitochondria‑lacking amoeboid protists in the Amoebozoa Archamoebae
- Archbishop: Role, History, and Distinctions Archbishop
- Archbishop of Canterbury
- Archduke
- Archduke Franz Ferdinand of Austria — heir whose assassination triggered World War I Archduke Franz Ferdinand of Austria
- Arche (Jupiter XLIII): a small irregular moon of Jupiter Arche (moon)
- Archedictyon: the reconstructed ancestral wing venation of insects Archedictyon
- Archelon — the giant sea turtle of the Late Cretaceous Archelon
- Archer: practitioner of archery — equipment, history and uses Archer
- Archer (TV series)
- Archer City, Texas — county seat and small-town cultural center Archer City, Texas
- Archer County, Texas
- Archer Heights, Chicago
- Archer, Florida — small city in Alachua County near Gainesville Archer, Florida
- Archer, Iowa — small city in O'Brien County Archer, Iowa
- Archers of Loaf
- Archery: practice, equipment, history and modern sport Archery
- Archery, Georgia — rural community and the Jimmy Carter Boyhood Farm Archery, Georgia
- Archetype (psychology, literature, and culture) Archetype
- Archibald Gracie IV
- Archibald Vivian Hill — English physiologist and Nobel laureate Archibald Hill
- Archibald Primrose, 5th Earl of Rosebery
- Archibald Prize: Australia's Leading Portrait Award Archibald Prize
- Archibald Wilson: Rhodesian air marshal, wartime pilot and public figure Archibald Wilson
- Archie Bunker: Character, Creation, and Cultural Impact Archie Bunker
- Archie Bunker's Place (1979–1983) Archie Bunker's Place
- Archie Comics
- Archie Moore: Light-Heavyweight Champion and Knockout Specialist Archie Moore
- Archie Mountbatten-Windsor — brief profile Archie Mountbatten-Windsor
- Archie Roach — Australian singer-songwriter and advocate Archie Roach
- Archie Shepp