Search by letter: S
Search by letter
Search by letter: S
- Spinach (Spinacia oleracea) Spinach
- Spinal cord: structure, function, and clinical importance Spinal cord
- Spinal tumor: types, symptoms, diagnosis, and treatment Spinal tumor
- Spindle
- Spindle (textiles)
- Spine (vertebral column): structure, function, evolution and health Spine
- Spinet: the compact harpsichord for domestic music Spinet
- Spingarn Medal
- Spink County, South Dakota
- Spinner dolphin (Stenella longirostris) Spinner dolphin
- Spinneret: the silk‑spinning organ of spiders and other arthropods Spinneret
- Spinning Jenny: Invention, Design, and Impact on Textile Production Spinning jenny
- Spinosauridae: the spined, semi-aquatic theropod family Spinosauridae
- Spinosaurus — sail-backed semi-aquatic theropod Spinosaurus
- Spinster: history, meanings and cultural context Spinster
- Spintronics: electronics based on electron spin Spintronics
- Spiny dogfish (Squalus acanthias) Spiny dogfish
- Spiny lobster (rock lobster): biology, behavior, fisheries and conservation Spiny lobster
- Spiny mouse (genus Acomys) Spiny mouse
- Spiracle: Respiratory Openings in Arthropods and Fish Spiracle
- Spiraea (spirea) — genus of ornamental shrubs in the rose family Spiraea
- Spiraeoideae — historical subfamily in the rose family (Rosaceae) Spiraeoideae
- Spiral Curves: Definition, Types, Mathematical Properties and Applications Spiral
- Spiral (2021 film) Spiral (2021 movie)
- Spiral galaxy: structure, types, formation and significance Spiral galaxy
- Spire (architectural element) Spire
- Spirillum — spiral-shaped bacteria: morphology, taxonomy and significance Spirillum
- Spiringen — mountain municipality in the canton of Uri, Switzerland Spiringen
- Spirit: meanings, beliefs, and cultural uses Spirit
- Spirit (Leona Lewis album)
- Spirit AeroSystems: major aerostructures manufacturer Spirit AeroSystems
- Spirit Airlines — American ultra low-cost carrier Spirit Airlines
- Spirit Lake, Idaho
- Spirit Lake, Iowa — city in the Iowa Great Lakes region Spirit Lake, Iowa
- Spirited Away
- Spiritism (Kardecian Doctrine) Spiritism
- Spirituals (music) Spiritual (music)
- Spiritual gift (Christianity) Spiritual gift
- Spiritual Kung-Fu
- Spiritual Machines (Our Lady Peace album) Spiritual Machines
- Séance: meeting, practices, history, and cultural significance Spiritual séance
- Spiritual Successor: Definition, Characteristics, and Cultural Role Spiritual successor
- Spiritual warfare (Christian belief and practice) Spiritual warfare
- Spiritualism: belief in communication with the dead and its practices Spiritualism
- Spirituality: Meaning, Practices, and Distinctions Spirituality
- Spiro Agnew: U.S. Vice President, Maryland Governor, and Political Controversy Spiro Agnew
- Spiro Mounds: Mississippian archaeological complex in Oklahoma Spiro Mounds
- Spiro, Oklahoma
- Spirochaetaceae
- Spirochaete (Spirochaetae) — helical, motile bacteria and their significance Spirochaete
- Spit (coastal landform) Spit (landform)
- Spit It Out (Slipknot song) Spit It Out
- Spitalfields (London) — historic East End district of Tower Hamlets Spitalfields
- Spitsbergen: Svalbard’s Largest Island in the High Arctic Spitsbergen
- Spittal an der Drau District
- Spittal of Glenshee — Highland hamlet, history and winter-sports centre Spittal of Glenshee
- Spitting Image (British satirical puppet show) Spitting Image
- Spitz
- Spitz (Japanese rock band) Spitz (band)
- Spitz (dog) — Characteristics, History and Notable Breeds Spitz (dog)
- Spitzer Space Telescope — NASA infrared observatory and its legacy Spitzer Space Telescope
- Splash (1984 film) Splash (movie)
- Splash and Bubbles — PBS Kids animated series about ocean life Splash and Bubbles
- Splatoon
- Human spleen: anatomy, immune functions, and clinical significance Spleen
- Splendid astrapia (Astrapia splendidissima) Splendid astrapia
- Splendour in the Grass: Australian winter music festival at North Byron Parklands Splendour in the Grass
- Splenomegaly (enlarged spleen) Splenomegaly
- Spliceosome: cellular machinery for pre-mRNA splicing Spliceosome
- Splinter (2003 album by The Offspring) Splinter
- Split-Dalmatia County
- Split, Croatia — port city and historic centre built around Diocletian’s Palace Split, Croatia
- Splitting the Atom (EP) Splitting the Atom
- Splügen — Alpine village in Graubünden, Switzerland Splügen
- Spock (Star Trek character) Spock
- Spokane Chiefs
- Spokane County, Washington — overview, history, geography, and key facts Spokane County, Washington
- Spokane, Washington: overview, history, geography, and culture Spokane, Washington
- Spoke (wheel component) Spoke
- Spoken language
- Spoken Word (spoken-word poetry) Spoken word
- Spokesperson: role, responsibilities, history and types Spokesperson
- Sponde (Jupiter moon) Sponde (moon)
- Sponge (Porifera): structure, ecology, and evolutionary significance Sponge
- Sponge (cleaning tool): materials, structure, history and uses Sponge (tool)
- Sponge cake: light, egg‑leavened cakes and their varieties Sponge cake
- SpongeBob SquarePants
- SpongeBob SquarePants (character)
- SpongeBob SquarePants — Season 1 (1999–2001) SpongeBob SquarePants (season 1)
- SpongeBob SquarePants — Season 10 SpongeBob SquarePants (season 10)
- SpongeBob SquarePants — Season 11 SpongeBob SquarePants (season 11)
- SpongeBob SquarePants — Season 12 SpongeBob SquarePants (season 12)
- SpongeBob SquarePants — Season 2 SpongeBob SquarePants (season 2)
- SpongeBob SquarePants — Season 3 SpongeBob SquarePants (season 3)
- SpongeBob SquarePants (season 8)
- SpongeBob SquarePants — Season 9 SpongeBob SquarePants (season 9)
- SpongeBob SquarePants vs. The Big One
- SpongeBob SquigglePants
- SpongeBob's Big Birthday Blowout — 20th Anniversary Special SpongeBob's Big Birthday Blowout
- SpongeBob's Last Stand (SpongeBob SquarePants episode) SpongeBob's Last Stand
- Sponsor: Types, Roles, History, and Modern Uses Sponsor
- Spontaneity (chemistry): Gibbs free energy and thermodynamic favorability Spontaneity (chemistry)
- Spontaneous generation (historical scientific theory) Spontaneous generation
- Spontaneous symmetry breaking
- Spoof: meanings, uses, and distinctions Spoof
- Spoon: design, types, history and common uses Spoon
- Spoonbill (wading bird) Spoonbill
- Spoonman (Soundgarden song) Spoonman
- Sporangium: enclosure for spores and its role in plant and fungal life cycles Sporangium
- Spore (reproductive and survival cell) Spore
- Spore (video game)
- Spork — the combined spoon and fork utensil Spork
- Sporocarp (fungal fruiting body): form, function, and examples Sporocarp (fungi)
- Sport: definition, forms, history, health benefits and spectatorship Sport
- Sport Club Corinthians Paulista
- Sport Club do Recife
- Sport Club Internacional (Internacional, Porto Alegre) Sport Club Internacional
- Sport coat: definition, features, history, and how it differs from blazers and suit jackets Sport coat
- Sport England (English Sports Council) Sport England
- Sport in Japan: Tradition, Modernization, and Contemporary Landscape Sport in Japan
- Sport psychology: principles, methods, and applications Sport psychology
- Sport Relief (Comic Relief charity event) Sport Relief
- Sport utility vehicle (SUV): types, design, history, and uses Sport utility vehicle
- Sportacus
- Sportcity (Manchester) — multi-venue sports complex and legacy site Sportcity (sports ground)
- Sporting Clube de Goa
- Sporting CP (Sporting Clube de Portugal) Sporting CP
- Sporting Cristal
- Real Sporting de Gijón Sporting de Gijón
- Sporting Kansas City
- Sporting Toulon Var — French football club Sporting Toulon Var
- Sports agent: role, responsibilities, regulation and selection Sports agent
- Sports car
- Sports club: organization, types, structure and social role Sports club
- Sports commentator
- Sports Illustrated: American Sports Magazine and Media Brand Sports Illustrated
- Sports in India: Traditions, Development, and the Contemporary Scene Sports in India
- Sports video games: simulation, arcade, management, and cultural impact Sports video game
- SportsCenter — ESPN's flagship sports news program SportsCenter
- Sportsmanship
- Sportsmen Acres, Oklahoma
- Sportsnet 360 (Canadian sports television channel) Sportsnet 360
- Sportsperson: definition, roles, and distinctions Sportsperson
- Sportswear: Purpose, Components, History and Everyday Use Sportswear
- Sportverein Austria Salzburg
- Spot-billed pelican (Pelecanus philippensis) Spot-billed pelican
- Spotify — digital music streaming service Spotify
- Spotlight (2015 film) Spotlight (movie)
- Spotswood, New Jersey: overview and local profile Spotswood, New Jersey
- Spotsylvania County, Virginia
- Spotsylvania Courthouse, Virginia
- Spotted bass (Micropterus punctulatus): description, distribution, and angling Spotted bass
- Spotted eagle ray (Aetobatus narinari) Spotted eagle ray
- Spotted hyena (Crocuta crocuta): ecology, behavior and human interactions Spotted hyena
- Spotter
- Spotting (off‑road) Spotting (off-road)
- Spouse of the Prime Minister of the United Kingdom
- SPQR: Meaning, history, and enduring use of the Roman emblem SPQR
- Sprachbund — linguistic convergence across geographic areas Sprachbund
- Spragueville, Iowa
- Sprain (ligament injury) Sprain
- Spratly Islands (South China Sea) Spratly Islands
- Sprawl trilogy (William Gibson) Sprawl trilogy
- Spread spectrum: principles, types, history and applications Spread spectrum
- Spreadsheet (computer application) Spreadsheet
- Spree (river) — eastern Germany, Berlin and the Spreewald Spree
- Spree-Neiße — district in southern Brandenburg, Germany Spree-Neiße
- Spreitenbach: Swiss municipality in the canton of Aargau Spreitenbach
- Sprent Dabwido: Nauruan leader, athlete, and parliamentarian (1972–2019) Sprent Dabwido
- Sprimont: Municipality in the Province of Liège, Belgium Sprimont
- Spring: season of renewal — causes, characteristics, culture and uses Spring
- Spring (device): types, materials, uses, and behavior Spring (device)
- Spring (water)
- Operation Grapeshot — Spring 1945 Allied Offensive in Italy Spring 1945 offensive in Italy
- Spring Breakers (2012 film) Spring Breakers
- Spring bud (traditional spring green) Spring bud
- Spring green (color) Spring green
- Spring Green, Wisconsin — Village in Sauk County Spring Green, Wisconsin
- Spring Hill, Iowa: overview, history, and community profile Spring Hill, Iowa
- Spring Hill, Kansas
- Spring Mill, Kentucky
- Spring Offensive (1918): the Kaiserschlacht and the Ludendorff Offensive Spring Offensive
- Spring River (Missouri — Kansas — Oklahoma) Spring River (Missouri)
- Spring scale (spring balance) Spring scale
- Spring Valley, Illinois: Overview and Local Profile Spring Valley, Illinois
- Spring Valley, Kentucky
- Springbok (Antidorcas marsupialis): description, behavior, and significance Springbok
- Springbrook, Iowa
- Springdale, Arkansas: City in Northwest Arkansas Springdale, Arkansas
- Springdale, Ohio
- Springdale, Pennsylvania — borough on the Allegheny River near Pittsburgh Springdale, Pennsylvania
- Springer, Oklahoma
- Springfield — common place name, cultural symbol, and notable usages Springfield
- Springfield Falcons (AHL ice hockey team) Springfield Falcons
- Springfield Model 1795 Musket
- Springfield Model 1855 (rifled musket) Springfield Model 1855
- Springfield (Jacksonville neighborhood), Florida Springfield, Florida
- Springfield, Illinois
- Springfield, Kentucky: county seat and small-city center in central Kentucky Springfield, Kentucky
- Springfield, Massachusetts: City on the Connecticut River Springfield, Massachusetts
- Springfield, Missouri — Queen City of the Ozarks Springfield, Missouri
- Springfield, Nebraska: Small city in Sarpy County near Omaha Springfield, Nebraska
- Springfield, Ohio
- Springfield, Oregon — overview, history, geography, and local features Springfield, Oregon
- Springfield, South Dakota
- Springfield, Tennessee
- Springfield, Vermont
- Springhill, Louisiana
- Springleaf MRT station (TE4) — overview, layout, and local connections Springleaf MRT station
- Springtail (Collembola): small soil arthropods with a springing tail Springtail
- Springtown, Texas
- Springview, Nebraska
- Springville, Alabama — City in St. Clair County Springville, Alabama
- Springville, California — foothill community in Tulare County Springville, California
- Springville, Iowa: a concise overview of the small Midwestern city Springville, Iowa
- Springville, Utah — overview, history, and cultural highlights Springville, Utah
- Sprint (track and field) Sprint
- Sprint Corporation — U.S. Telecommunications Carrier and Its Evolution Sprint Corporation
- Sprint football: lightweight varsity American football in U.S. colleges Sprint football
- Sprinter (British Rail) — British diesel multiple-unit family Sprinter (British Rail)
- Sprite (lemon‑lime soft drink) Sprite
- Sproughton — village and civil parish in Suffolk, England Sproughton
- Sprouting (edible sprouts): methods, types, nutrition, uses, and safety Sprouting
- Spruce (Picea): characteristics, ecology, and uses Spruce
- Spun (2002 film) Spun
- Spur, Texas: small city in Dickens County Spur, Texas
- Spurgeon's — English children's charity founded by Charles Spurgeon Spurgeon's
- Spurgeon's College: London Baptist theological college founded by Charles Spurgeon Spurgeon's College
- Sputnik 1
- Sputnik 2: the Soviet satellite that carried Laika into orbit Sputnik 2
- Sputnik programme: Soviet satellite initiative and its global impact Sputnik programme
- SpVgg Bayreuth
- SpVgg Greuther Fürth — German football club from Fürth, Bavaria SpVgg Greuther Fürth
- Spy (2015 film) Spy (2015 movie)
- Spy Hard (song)
- Spy Kids (2001 film) Spy Kids
- Spy movie: genre, history, characteristics and notable examples Spy movie
- Spy-fi: the intersection of espionage and speculative technology Spy-fi
- Spyglass Entertainment: overview of the film and television production company Spyglass Entertainment
- Spyro — video game character and franchise Spyro
- Spyro (video game character) Spyro (character)
- Spyro (video game series) Spyro (series)
- Spyro the Dragon (1998 PlayStation video game) Spyro the Dragon (video game)
- Spyros Kyprianou: Cypriot Politician and Second President (1932–2002) Spyros Kyprianou
- Spyware: definition, types, risks, and prevention Spyware
- Spyware removal software: tools, methods, and best practices Spyware removal software
- SQR codes (Secure Quick Response codes) SQR codes
- Squad Automatic Weapon (SAW) — Light support for infantry squads Squad automatic weapon
- Squadron: military unit for land, sea and air operations Squadron
- Squall (meteorology): sudden, sharp increase in wind Squall
- Squamata: the scaled reptiles — lizards, snakes and worm lizards Squamata
- Squamosal bone
- Squamous cell carcinoma
- Squanto (Tisquantum) — Patuxet Native who aided the Plymouth Pilgrims Squanto
- Square (plane geometry) Square
- Square (algebra): definition, properties, and uses Square (algebra)
- Square (block cipher) Square (cipher)
- Square dance
- Square Enix — Japanese video game developer, publisher and media company Square Enix
- Square foot (unit of area) Square foot
- Square Foot Gardening: A Compact Method for Productive Vegetable Beds Square foot gardening
- Square kilometre (km²) Square kilometre
- Square metre (m²): definition, notation, conversions and uses Square metre
- Square mile (unit of area) Square mile
- Square number (perfect square) Square number
- Square One TV
- Square rig: design, history, and uses of square-sail ship rigging Square rig
- Square root
- Square root of 2
- Square yard (yd²): definition, conversions, history and usage Square yard
- Squaring the Circle: The Classical Geometric Problem and Its Resolution Squaring the circle
- Squash
- Squash (drink): concentrated fruit syrup for diluting into soft drinks Squash (drink)
- Squash (plant): types, origin, uses, and botanical classification Squash (plant)
- Squash (racket sport) Squash (sport)
- Squat — exercise, movement pattern, and cultural posture Squat
- Squatting: informal occupation of vacant land and buildings Squatting
- Squealer (Animal Farm)
- Squeeze (English rock band) Squeeze (band)
- Squid: Biology, behavior, and human interactions Squid
- Squid cache — HTTP/FTP proxy and caching server Squid cache
- Squidbillies — Adult Swim animated sitcom Squidbillies
- Squire — medieval attendant, rural landholder, and historic title Squire
- Squire Fridell
- Squirrels: Overview, types, behavior, and interactions Squirrel
- Squirrel monkey (Saimiri) — small New World primates Squirrel monkey
- SR Class 2Nol — Southern Railway two-car electric multiple units SR Class 2Nol
- SR Class 2SL electric multiple units SR Class 2SL
- SR 2Wim electric multiple units SR Class 2Wim
- SR Class 4DD — Southern Railway double-deck electric multiple unit SR Class 4DD
- SR Class 4Lav — Southern Railway four-car 'Lav' electric multiple units SR Class 4Lav
- SR Class 6Pul — Southern Railway six‑car electric multiple units SR Class 6Pul
- Southern Railway CP electric multiple units — AC suburban trains for Crystal Palace services SR Class CP
- SR Class CW (Southern Railway AC Electric Multiple Units) SR Class CW
- SR Class SL — Southern Railway AC electric multiple units SR Class SL
- Southern Railway departmental locomotives SR departmental locomotives
- Southern Railway multiple-unit numbering and classification SR multiple unit numbering and classification
- Sranan Tongo — the English-based creole of Suriname Sranan Tongo
- Srđan Baljak
- Srđan Pecelj (Bosnian footballer, born 1975) Srđan Pecelj