- S ... SA-7 Grail
- SA-8 Gecko ... Sabang
- Sabaoth ... saboraim
- sabot ... sacerdotalism
- sacerdotium ... sacred artifact
- sacred baboon ... sadaebu
- Sadahito ... sadō
- sadomasochism ... Safety of Life at Sea Convention
- Safety of Medicines, Committee on ... sagebrush
- sagebrush mariposa lily ... Sahgal, Nayantara Pandit
- Sahib al-Fath ... Sailing Directions
- sailing ship ... Saint Croix International Historic Site
- Saint Croix River ... Saint John, Lake
- Saint John, Oliver ... Saint Michael’s Town
- Saint Michael, Cathedral of ... Saint-Amand-Montrond
- Saint-Amant, Marc-Antoine Girard, sieur de ... Saint-Louis, Île
- Saint-Louis-Arzviller ... Sainte-Thérèse Basilica
- Saintes ... Sakata Tōjūrō
- Sakata, Harold ... Salair Ridge
- Salaire de la peur, Le ... Sale, Antoine de La
- Sale, Cornelius Calvin, Jr. ... Salii, Lazarus E.
- Salik of Debre Libanos ... Sálmabók
- Salmacis and Hermaphroditus ... Salovey, Peter
- salp ... saltbush
- saltcellar ... Salvia splendens
- Salvia wagneri ... Samarang
- Samaras, Antonis ... Samian ware
- Samidare-sho ... Sampoong Department Store collapse
- sampradaya ... San Andrés, University of
- San Angelo ... San Fernando
- San Fernando ... San Jose Mercury News
- San Jose Mogote ... San Miguel
- San Miguel ... Sanada Yukitsura
- Sanaga River ... sanctuary
- sanctuary ... Sanday, William
- sandbank model ... Sandra Belloni
- Sandrart, Joachim von ... Sangatsu Hall
- Sangatsu-dō ... Sankhansaften
- sankhara ... Sanskritization
- Sansom, William ... Santa Cruz Island
- Santa Cruz Islands ... Santa Monica Mountains
- Santa Monica Mountains National Recreation Area ... Santiago Mountains
- Santiago Peak ... Sanz, Jorge
- Sanzhou ... Sap, Thale
- sapajou ... Sara Lee Corporation
- Sara Videbeck ... Saratoga Snapper
- Saratoga Springs ... Sarek National Park
- Sarek, Mount ... sarong
- Saronic Gulf ... Sarybagysh
- Sarychev, Gavril Andreyevich ... Satan Says
- Satan’s Diary ... Satta, Salvatore
- Sattahip ... Satyrinae
- Satyrs and Sunlight: Sylvarum Libri ... Saura
- Saura Atarés, Carlos ... Savary, Alain François
- Savary, Anne-Jean-Marie-René, duc de Rovigo ... Savoy Conference
- Savoy Declaration ... saxitoxin
- Saxnôt ... Saʿādah, Anṭūn
- Saʿādī ... scalare
- scalawag ... scanning
- scanning acoustic microscope ... Scarlet Letter, The
- Scarlet Letter, The ... Scenes from a Writer’s Life: A Memoir
- Scenes from Private Life ... Schattschneider, Elmer Eric
- Schatz, Brian ... Schengen Information System
- Schenk, Adrianus ... Schinner, Mathias
- Schinopsis ... Schleswig
- Schleswig faience ... Schmitt, Harrison
- Schmitt, Harrison Hagan ... Scholemaster, The
- Scholes, Myron S. ... Schooreel, Jan van
- Schoorel, Jan van ... Schuldfrage, Die
- Schule des Sehens ... Schwanenlied der Romantik, Ein
- Schwaner Mountains ... Schwitters, Kurt
- Schwob, Lucy Renée Mathilde ... Scientific Society
- Scientific Study of Unidentified Flying Objects ... Sclerodermi
- Sclerolinum ... Scopus umbretta
- Scopus, Mount ... Scotland, Seven Earls of
- scotoma ... Scottish deerhound
- Scottish Enlightenment ... scree
- screech owl ... scroll painting
- scroll saw ... Scutellosaurus
- scutellum ... Sea Change, A
- Sea Change, The ... Sea Shepherd Conservation Society
- Sea Skua ... Sealyham terrier
- seam, coal ... seat belt
- Seat of Government Administration Act ... Sebilian tool complex
- Sebinus, Lacus ... Second Defense of the English People by John Milton, Englishman, in Reply to an Infamous Book Entitled Cry of the King’s Blood, The
- second degree ... Second War of Independence
- second wave of feminism ... secondary screwworm
- secondary sedimentary structure ... Secrets from the Center of the World
- Secrets of a Soul ... seder
- seder ... seed bug
- Seed Cathedral ... Sefer meturgeman
- Sefer mikhlol ... Seguntang Hill
- Ségur, Mme de ... seismometer
- seismoscope ... Selborne, Roundell Palmer, 1st Earl of, Viscount Wolmer Of Blackmoor, Baron Selborne Of Selborne
- Selborne, Roundell Palmer, 1st Earl of, Viscount Wolmer of Blackmoor, Baron Selborne of Selborne ... Seleukeia Pieria
- Seleukeia Tracheotis ... selfheal
- selfie ... Selten, Reinhard Justus Reginald
- Selukwe ... semiconductor laser
- semiconductor memory ... Semper Fidelis
- Semper Gallery ... Senebier, Jean
- Seneca ... Šenoa, August
- Senoi ... Sentencia-Estatuto
- sentencing ... Sephardi
- Sephardi Torah Guardians ... sequential estimation
- sequential file ... Serenata
- Serendib ... Series of Stakes Set in the Ground at Regular Intervals to Form a Rectangle—Twine Strung from Stake to Stake to Demark a Grid—a Rectangle Removed from This Rectangle, A
- Series of Unfortunate Events, A ... Serpentine, the
- Serpico ... service dog
- Service Employees International Union ... set
- SET ... settlement option
- Settlement, Act of ... Seven Servite Founders
- Seven Sisters ... Severn Bridge
- Severn Canal ... Sex and Temperament in Three Primitive Societies
- Sex and the City ... sexual slavery
- sexual system ... Sg
- SG iron ... Shādhiliyyah
- shading ... Shaggy
- shaggy cap ... Shakapanga
- shake ... Shalikashvili, John Malchase David
- Shalimar ... Shan language
- Shan Plateau ... Shankaracharya
- Shanker, Albert ... Shapley, Lloyd Stowell
- Shapley-Scarf model ... Sharma, Rakesh
- Sharma, Rohit ... shatranj
- Shatranj ke Khilari ... shaykh al-balad
- shaykh al-Islām ... shear wall
- shear wave ... Sheeran, Ed
- Sheeran, Edward Christopher ... Sheldon, Edward Austin
- Sheldon, Laura Maria ... Shen Dehong
- Shen Duanxian ... shepherd’s pie
- shepherd’s purse ... Sherman, Vincent
- Sherman, William Tecumseh ... Shidehara Kijūrō, Danshaku
- Shidyāq, Aḥmad Fāris al- ... shikhara
- shikimic acid ... Shīnā language
- Shinagawa ... Ship Canal Company building
- ship construction ... Shirley: A Tale
- Shirodkar, Bhanumati ... Shkreli, Martin
- Shkup ... Shōheikō
- shoin ... Shoreditch shop system
- Shoreham-by-Sea ... short-term security
- short-term warning system ... shoulder joint
- shoulder-hand syndrome ... Shri Amarnath ji
- Shri Kedarnath Dham ... Shubert, Jacob J.
- Shubert, Jake ... Shuowen jiezi
- Shupashkar ... Si Suvata
- SI System ... Sibley, Hiram
- sibling ... Sicyon
- Sicyos ... Sidi Yahya oasis
- Sīdī ʿAbd Allāh ... Siembra
- siemens ... Sifakis, Joseph
- Siferwas, John ... Signal Hill Historic Park
- signal line ... Sikharulidze, Anton
- Sikhism ... Silent World, The
- Silenus ... Silk Route
- silk screen ... Silvanus
- Silvanus, Saint ... Silver-Russell syndrome
- Silvera, Makeda ... Simeon, Song of
- Simeoni, Sara ... Simon’s Town
- Simon, Bob ... simple tandem repeat
- simple time ... Sin
- Sin ... Sindhi language
- Sindhi literature ... Singh, Rana Pratap
- Singh, Ranveer ... single-use zoning
- single-walled carbon nanotube ... Sino-Tibetan Chain
- Sino-Tibetan languages ... Siparunaceae
- SIPC ... Siret River
- Sirhak ... Sīstānī, ʿAlī al-Ḥusaynī al-
- Siste Atenaren, Den ... SITS
- Sits Straight ... Six Degrees of Kevin Bacon
- Six Degrees of Separation ... Sjöström, Viktor David
- Sjöwall, Maj ... skene
- Skenes, Paul ... Skinner, Constance Lindsay
- Skinner, Cornelia Otis ... skunk badger
- skunk bear ... Slagelse
- Slagle, Eleanor Clarke ... slave labour
- Slave Life in Virginia and Kentucky; or, Fifty Years of Slavery in the Southern States of America ... Sleeping Beauty Castle
- Sleeping Beauty Novels, The ... sliding filament theory
- sliding keel ... Sloan, David H.
- Sloan, Gerald Eugene ... Slow Dazzle
- slow drag ... Small Faces, the
- Small Family Business, A ... Smart, Elizabeth
- Smart, John Jamieson Carswell ... Smiling Dutchman
- Smiling God ... Smith, Gene
- Smith, George ... Smith, Richard Emerson
- Smith, Richard Harold ... Smoholler
- Smoke ... Smriti
- Smrt Smail-age Čengića ... Snapper, The
- Snapper, The ... Snømannen
- snood ... Snowdonia National Park
- snowdrop ... soaked zone
- Sōami ... Social Choice and Individual Values
- social choice theory ... Social Mass Party
- social mechanics ... socialist law
- Socialist Parties of the European Community, Confederation of ... Sociology of Religion
- sociometry ... sodium hyposulfite
- sodium inactivation ... soft reaction
- soft real-time system ... SOI
- Soi Dao, Mount ... solan goose
- Solana Madariaga, Francisco Javier ... Solaris
- Solaris ... Soli
- Soli ... Sǒllal
- sollar ... Solpugida
- Solstad, Dag ... somatocrinin
- somatoform disorder ... Someśvara I
- Someśvara IV ... Son of Man
- Son of Man ... song measure
- Song My Paddle Sings, The ... Songs of Distant Earth, The
- Songs of Enchantment ... Sony’r Ra, Le
- sōō ... Sopwith, Sir Thomas Octave Murdoch
- Soqurloq ... Sorkin, Aaron Benjamin
- Sorkin, Richard ... Soter, St.
- Soteria ... Soulier de satin, Le
- Soulier de satin; ou, Le Pire n’est pas toujours sûr, Le ... Source Code: My Beginnings
- source data ... South African yellowwood
- South Alligator River ... South Downs
- South Dravidian languages ... South Sea Company
- South Sea Islanders ... Southeastern Carpathians
- Southeastern Center for Contemporary Art ... Southern Kosala
- southern lady fern ... Southern, Terry
- Southerne, Thomas ... Soviet-German Nonaggression Pact
- Soviet-Turkish Treaty ... SPA Standing Committee
- Spaak, Paul-Henri ... spadefoot toad
- Spader, James ... Spanish Harlem
- Spanish Harlem Orchestra ... sparse theory
- Sparta ... Spear of Blood, The
- Spear of Destiny ... Species Muscorum Frondosorum
- Species Plantarum ... spectroscopic binary star
- spectroscopic parallax ... Spelce, Neal
- speleology ... spermatic cord
- spermatium ... sphenopsid
- Sphenopsida ... spider plant
- spider silk ... spin magnetic quantum number
- spin quantum number ... Spinola, Oberto
- spinor ... Spirit Church
- spirit dance ... Spitz, René
- Spitzenkörper ... Spoilers, The
- Spoils of Poynton, The ... spore
- Spore ... spotted deer
- spotted dick ... Spring and Fall
- Spring and Fall: To a Young Child ... sprocket
- sprosser ... squall line
- squalodont ... squill
- Squilla ... Srinivasan, Parthasarathy
- sriracha ... St. Andrew’s Golf Club
- St. Andrews ... St. John the Baptist, Basilian Order of
- St. John the Hairy ... St. Patrick’s Day
- St. Patrick’s Day; Or the Scheming Lieutenant ... stabilizer, economic
- stabilizing selection ... stag’s horn moss
- Stag’s Leap ... Stalden
- stalemate ... Stances
- Stances sur la retraite ... Standing Committee of the State Council
- standing crop ... Stanley Pool
- Stanley steamer ... Stapulensis, Johannes Faber
- star ... star-of-Bethlehem
- Star-Spangled Banner ... Starr, Martin
- Starr, Ringo ... State Capitol
- State Capitol ... State Security, Court of
- State Security, Directorate of ... station blackout
- station drama ... Staunton, Imelda
- Staupers, Mabel Keaton ... Steamboat Springs
- Steamboat Willie ... steering system
- steering wheel ... Steinbrück, Peer
- Steinem, Gloria ... stem cell
- stem Christiania ... Stephanibyx coronatus
- Stephanie, Princess ... stepped leader
- stepped lending ... Stern, Daniel
- Stern, David ... Stevens, James
- Stevens, Jimmy ... Stewart, Phyllis
- Stewart, Potter ... Stigar
- Stigler, George J. ... Stilwell, Joseph W.
- Stilwell, Joseph Warren ... Stirlingshire
- Stirner, Max ... Stockholm University
- Stockholm, Treaties of ... Stolica
- Stolidobranchia ... Stone, Fred
- Stone, Fred Andrew ... Stop AAPI Hate
- stop codon ... Stories of Bernard Malamud, The
- Stories of Eva Luna, The ... Story of Rimini, The
- Story of San Michele, The ... Stradella accordion
- Stradella, Alessandro ... Strange Fugitive
- Strange Impersonation ... strata
- strata ... Straton’s Tower
- Stratonice ... Streak, Heath
- streaked long-tailed wren-babbler ... Strelitzia nicolai
- Strelitzia reginae ... Stricken Field, A
- Stricker, Éva Amália ... strip test
- strip-chart recorder ... Strombus
- Strombus gigas ... Strozzi, Barbara
- Strozzi, Bernardo ... Struwwelpeter, Der
- Stry ... Stubb, Alexander
- Stubb, Cai-Göran Alexander ... Study for an End of the World
- Study Found a Spoon’s Worth of Microplastics in Human Brains ... Stürmer, Der
- Sturmey-Archer gear ... Styx
- Styx ... subchondral bone
- subclavian artery ... sublitharenite
- sublittoral zone ... Substance, The
- substantia compacta ... succinate dehydrogenase
- Succineacea ... Sudan, flag of The
- Sudan, history of ... Suez, Isthmus of
- Suez-Mediterranean pipeline ... suggestion
- Suggs, Louise ... Sukhoi Su-27
- Sukhoi Su-57 ... Süleyman
- Sūleyman ... sulfuryl chloride
- Sulgrave Manor ... sulphur butterfly
- sulphur cycle ... Šumava Mountains
- Sumba ... Summer Palace, Former
- Summer Palace, Old ... Sun Bowl
- Sun Building ... Sunda slow loris
- Sunda Strait ... sunlight
- Sunlight Sonata, The ... Supella longipalpa
- Super ... super typhoon
- Super Typhoon Fung-wong ... Superior craton
- Superior Donuts ... Supertramp
- supertweeter ... suprematizm
- Supreme Akali Party ... Surat Thani
- Surayya, Kamala ... Surgeon General’s Library
- surgeon’s knot ... Surrey, Thomas Fitzalan, 11th Earl of
- Surrey, Thomas Holland, Duke of, 3rd Earl Of Kent ... Susanowo
- Susanti, Susi ... Susuz Yaz
- SUSY ... Suwon
- Suyá ... Sverdlovsk
- Sverdrup Basin ... Swallow, Ellen Henrietta
- swallow-shrike ... Swanson, Gloria
- Swanton, John Reed ... Swedish literature
- Swedish pancake ... sweet sorghum
- Sweet Sweetback’s Baadasssss Song ... Swift, Taylor Alison
- Swift-Ellis treatment ... Swiss National Park
- Swiss Pavilion ... Sydney Festival
- Sydney Film Festival ... Sym
- Symbionese Liberation Army ... symphonia
- symphonia ... Symphoricarpos sinensis
- Symphyla ... syndesmochorial placenta
- syndicalism ... synthetic division
- synthetic DNA ... Syrinx aruanus
- Syriza ... systems of equations
- systems programming ... Szymin, David
- Szymonowic, Szymon ... Sʿadad-Dīn
