- S ... Sa-in
- SA-N-1 ... Sabatier, Auguste
- Sabatier, Louis-Auguste ... ṣabr
- Sabra ... Sachs Harbour
- Sachs, Curt ... sacred corner
- Sacred Country ... Sadd-el-Kafara
- Ṣaddām City ... SAE
- SAE number ... Safi
- Ṣafī al-Dīn ... Sagoyewatha
- Sagra, Ramón de la ... Saḥrāʾ Al-Sharqīyah, Al-
- Ṣaḥrāʾ an-Nūbiya, Aṣ- ... Saint Andrew
- Saint Andrew’s cross ... Saint from Texas, A
- Saint Genet, Actor and Martyr ... Saint Louis Browns
- Saint Louis Cardinals ... Saint Peter, Cathedral of
- Saint Peter, Church of ... Saint-Domingue
- Saint-Étienne ... Saint-Pierre, Cathedral of
- Saint-Pierre, Cathedral of ... Sais
- saisei-itchi ... Sakma
- Sakmann, Bert ... Salanter, Israel
- Salanx ... Salesian Sisters of Don Bosco
- Salesians ... Salisbury, William
- Salisbury, William Longsword, 3rd earl of ... Salome
- Salome ... salt pillow
- Salt Plains National Wildlife Refuge ... Salvadoraceae
- salvage ... Samal
- Samal ... Sambucus nigra
- Sambucus pubens ... Sampaio, Jorge
- Sampaloc ... Samwell-Smith, Paul
- Samye Debate ... San Esteban del Rey
- San Esteban Primera Mining Company ... San Joaquin River
- San Joaquin Valley ... San Martín, José de
- San Martín, Juan Zorrilla de ... San-ch’ung
- san-hsien ... Sanct Hansaften-spil
- Sancta Sophia ... Sandalwood English
- sandalwood family ... Sandow, Eugen
- Sandoway ... Sangamon Interglacial Stage
- Sangamon River ... Śaṅkara-Nārāyạna
- Sankarah, Tall ... Sanskrit literature
- Sanskrit Reader ... Santa Cruz Islands
- Santa Cruz Islands, Battle of ... Santa Prisca
- Santa Prisca y San Sebastián, Church of ... Santiago River
- Santiago Rodríguez ... Ṣanʿāʾ
- Sao ... Saphar
- saphenous nerve ... Sarāb carpet
- Saraband ... Saraveca language
- Sarawa cypress ... Sargassum muticum
- Sargassum natans ... Sarracenia leucophylla
- Sarracenia oreophila ... Sasanian dynasty
- Sasanid ... satellite radio
- satellite system ... saturation spectroscopy
- saturation vapour pressure ... Saudi Aramco
- Saudi Basic Industries Corporation ... Saustatar
- Sauternes ... Savimbi, Jonas
- Savimbi, Jonas Malheiro ... Sawhāj
- sawhorse ... Sayers, Gale
- Sayers, Gale Eugene ... SC Bastia
- Sc galaxy ... scalping
- Scalvini, Giovita ... Scarboro
- Scarborough ... Scaurus, Marcus Aemilius
- scavenger ... Schaffhausen
- Schaffhausen ... Schelde River
- Schelde River Tunnel ... Schildt, Runar
- Schillebeeckx, Edward ... Schleglerbund
- Schleicher, August ... Schmidt, Karl
- Schmidt, Karl P. ... Schola Cantorum
- schola cantorum ... schooling behaviour
- Schoolmaster Ni Huanzhi ... Schuelein-Steel, Danielle Fernande
- Schueller, Liliane Henriette Charlotte ... Schwäbisch Wörth
- Schwäbische Alb ... Schwitters, Kurt
- Schwob, Lucy Renée Mathilde ... Scientific-Humanitarian Committee
- scientific-realist education ... sclerotin
- sclerotium ... SCORE
- Score International Off Road Racing ... Scots law
- Scots Musical Museum, The ... Scottish renaissance
- Scottish Symphony ... screw dislocation
- screw extruder ... scrubber
- scrubbing tower ... Scytho-Sarmatian language
- Scythopolis ... sea horse
- sea ice ... sea-run trout
- Sea-Saint Studios ... Searching Wind, The
- searchlight ... seaworthiness warranty
- Seaxburg ... Second Act
- Second Advent ... Second Philippine Commission
- Second Piano Sonata ... secondary fusion device
- secondary group ... Secret River, The
- Secret Service ... Sedalia
- Sedan ... See of Antioch
- See That My Grave is Kept Clean ... Sefer ha-ruʾah ve-ha-nefesh
- Sefer ha-shirim ... Seguin
- Séguin, Camille ... seismic survey
- seismic tomography ... Selayar
- Selberg sieve ... Seleukos Nikator
- Selevin’s mouse ... Seli River
- selichot ... Selznick, David O.
- Selznick, Philip ... semiminor axis
- semimonocoque ... Sen Noci Svatojanské
- Sen Rikyū ... senegal dove
- Sénégal River ... sensible, distribution of the
- sensillar lymph ... Seon
- Seongnam ... Septembrists
- septenarius ... Serapi carpet
- Serapias ... Sergius of Radonezh, Saint
- Sergius of Resaina ... Seromycin
- Serooskerken, Isabella Agneta Elisabeth van Tuyll van ... serum hepatitis
- serum sickness ... Sesostris III
- Sesotho language ... Setonix brachyurus
- Setophaga picta ... Seven Men from Now
- Seven Nation Army ... severe obesity
- severe preeclampsia ... Sewell, Anna
- Sewell, Helen Moore ... Sexual Offences Act
- sexual offense ... Sforza, Giovanni
- Sforza, Ludovico ... Shādhilī, al-
- Shādhilī, Shaykh ... shagbark hickory
- Shaggy ... Shake It Off
- Shake It Up ... Shall We Dance
- Shall We Dance? ... Shan-tung question
- shan-yü ... Shannon, River
- Shannon, Scott ... Sharaf al-Dīn Abū Saʿd ʿAbd Allāh ibn Muḥammad ibn Hibat Allāh ibn Muṭahhar al-Tamīmī al-Mawṣilī ibn Abī ʿAṣrūn
- Sharaf al-Dīn Muḥammad ibn Saʿīd al-Būṣīrī al-Ṣanhājī ... Sharp, John
- Sharp, Phillip A. ... Shaw, Alfred P.
- Shaw, Anna Howard ... Shchokino
- Shchūchīnsk ... Sheehan, Patricia Leslie
- Sheehan, Patty ... Sheinwoodian Stage
- sheitan ... shellfish poisoning
- shellflower ... Shenzong
- sheol ... Sherlock Holmes
- Sherlock Holmes: A Game of Shadows ... Shiburoku Kaizuka
- Shibusawa Company ... Shiji
- Shijian-21 ... Shin kokinshū
- Shin Maha Thila Wuntha ... ship construction
- ship design ... shirt
- Shirukdukh ... Shluh
- Shluh language ... shōka
- Shōkadō Shōjō ... short interfering RNA
- Short Land musket ... shorthand
- Shorthorn ... Shōwa
- Showa ... Shrinking
- Shripati ... Shujāʿ Mirza
- Shujāʿ, Shāh ... shuttle car
- shuttle diplomacy ... Sibayak, Mount
- Sibbald, Sir Robert ... Sichuan peppercorn
- Sicilia ... sideburns
- sidecar ... Siedlce
- Sieg, Emil ... Sierra Madre
- Sierra Madre de Chiapas ... siglos
- sigma bond ... Sigurimi
- Sigurjónsson, Jóhann ... Silences
- Silences Between: Moeraki Conversations, The ... Siliguri
- Siling Vandals ... Siluridae
- Siluriformes ... Silver State
- Silver Streak ... SimEarth
- Simen jackal ... Simon of Sudbury
- Simon Rodia, Towers of ... simple reflexive stage
- simple schizophrenia ... Simwinga, Hammerskjoeld
- Simʿān, Qalʿat al- ... Sindhi language
- Sindhi literature ... Singidunum
- Singin’ in the Rain ... Singui Matu
- singular integral ... Sint Nicolaas
- Sint Nicolaas Church ... Siqueiros, David Alfaro
- Siquijor ... Sirohi
- Široký, Viliám ... Sistrurus
- Sistrurus catenatus ... Siuniq
- Siuri ... Sixteen Candles
- Sixteen Kingdoms ... Skatalites
- skate ... skim feeding
- skim milk ... Skorina, Franciscus
- Skorina, Francisk ... slab footing
- slab sea anchor ... slaty-backed nightingale thrush
- slaty-capped shrike-vireo ... sleep cycle
- sleep deprivation ... slide
- slide ... slit
- slit drum ... Slovenly Peter
- Slovenly Peter; or, Cheerful Stories and Funny Pictures for Good Little Folks ... small beer
- small body ... Smart, John Jamieson Carswell
- Smart, Ninian ... Smilodon
- Smim Htaw Buddhaketi ... Smith, Gladys Marie
- Smith, Grafton Elliot ... Smith, Sir Matthew
- Smith, Sir Ross Macpherson ... Smoky Mountains
- smoky quartz ... Sn
- SN 1572 ... sneezewort
- sneezing monkey ... Snow Mountains
- snow mushroom ... Snyder v. Phelps
- Snyder, Christopher ... socage
- Socal ... social evolution
- Social Evolution Movement of Black Africa ... social work
- social worker ... Socinians
- Socinus, Faustus ... sodium deficiency
- sodium depletion ... soft hail
- soft laser desorption ... Sohlman, Per August Ferdinand
- Sohm Abyssal Plain ... Sol Indiges
- Sol Invictus ... solar wind power satellite
- solar year ... solfatara
- Solfatara ... solitary wave
- soliton ... solstice
- Solṭān Moḥammad Shah ... somatosensory area
- somatostatin ... Something to Be Desired
- Something to Declare ... Son Pyŏng-Hui
- Son River ... Song of the Lark
- Song of the Lusitanian Bogey, The ... Sonic Youth
- Sonin ... sŏp’yŏnje
- sopa de albóndiga ... Sordariomycetes
- Sordello ... Sors, Joseph Fernando Macari
- Sors, José Fernando Macarurio ... Soufrière
- Soufrière Hills ... sound reinforcement system
- sound sculpture ... South African Boer Goat Breeders’ Association
- South African Coal, Oil and Gas Corporation ... South Carolina Exposition and Protest
- South Carolina Military Academy ... South Pacific
- South Pacific Bureau for Economic Co-operation ... Southeast Asian arts
- Southeast Asian hawk-owl ... Southern Fund
- southern fur seal ... Southern Tepehuan
- Southern Transitional Council ... Sovetsky Soyuz
- soviet ... Sozomen
- Sozzi, Mario ... Spade, Sam
- spade-leaf philodendron ... Spanish Hill
- Spanish hogfish ... Spartacus
- Spartacus ... spearfish
- spearfishing ... specific heat
- specific heat capacity ... Speculum ecclesiae
- Speculum iudiciale ... Spelman, Sir Henry
- spelt ... Sperostoma giganteum
- Sperrgebiet ... spheroidal weathering
- spherulite ... Spiegel, Sam
- Spiegel, Samuel ... Spinden, Herbert Joseph
- spindle ... Spira, Johann da
- Spira, Wendelin da ... spiritual marriage
- spiritual philosophy ... splint coal
- splintering ... spontaneous emission
- spontaneous fission ... Sportsman’s Notebook, A
- Sportsman’s Sketches, A ... spread footing
- spread vowel ... Springer, Axel
- Springer, Axel Cäsar ... Spy of the First Person
- spy story ... squatter
- squatter sovereignty ... Sri Pada
- Sri Ranganathaswamy Temple ... SSWWS
- st ... St. John’s bread
- St. John’s Church ... St. Peter in York, Cathedral and Metropolitical Church of
- St. Peter River ... Stachys byzantina
- Stachys officinalis ... staged resupply
- staged rocket ... stalking
- stalking ... Standard Dictionary of the English Language, A
- Standard Dutch language ... Stanford University
- Stanford, Amasa Leland ... Stanton, Gertrude
- Stanton, Giancarlo ... Star Trek III: The Search for Spock
- Star Trek into Darkness ... Stark, John
- Stark, Mabel ... State and Local Fiscal Assistance Act
- State and Main ... State of Play
- State of Qatar ... static fusimotor axon
- static kill ... Statutum in Favorem Principum
- statvolt ... steam soak
- steam turbine ... steering column
- steering feather ... Steiner House
- Steiner school ... stemmata
- stemmatic approach ... Stephanskirche
- Stephansson, Stephan G. ... Steps to Parnassus
- Steps Toward a Constructive Nominalism ... Sterna fuscata
- Sterna hirundo ... Stevens, Ted
- Stevens, Thaddeus ... Stheno
- Sthulabhadra ... Still Dead
- Still Feels Good ... stinkbug
- stinkdamp ... stock
- stock ... stoichiometric compound
- stoichiometry ... stone
- stone ... Stonemason, The
- stonemint ... Storch, Otto
- Stordahl, Axel ... Storrs, Sir Ronald
- Storting ... Stowe, Calvin E.
- Stowe, Calvin Ellis ... strambotto
- Stramenopiles ... Strapping Youth
- strappo ... Strather, John
- Strathnairn of Strathnairn and of Jhānsi, Hugh Henry Rose, Baron ... strawberry geranium
- strawberry guava ... Streetlife Serenade
- Streeton, Arthur ... stretch reflex
- stretch yarn ... String Quartet No. 19 in C Major, K 465
- String Quartet No. 2 ... stroma
- stroma ... Stroszek
- Stroud ... Struthioniformes
- Strutinskii’s hybrid model ... Stuart, James Francis Edward
- Stuart, Jeb ... Study of Democratic Institutions, Center for the
- Study of Divining Rods, or Two Books of Numbering by Means of Rods ... Sturmtruppen
- Sturnella ... Su Shih
- Su Song ... subcutaneous emphysema
- subcutaneous layer ... submarine plateau
- submarine rocket ... substitution pseudomorph
- substitution reaction ... Such, Such Were the Joys
- Suchan ... sudden unexpected death in epilepsy
- sudden-death time control ... Suffolk, William de la Pole, 1st Duke of
- Suffolk, William de la Pole, 1st Duke of, Marquess of Suffolk, Earl of Pembroke, Earl of Suffolk ... Suidae
- Suidas ... Sula, Kepulauan
- Sulabesi ... sulfinic acid
- sulfinyl compound ... Sullivan, John L.
- Sullivan, John Lawrence ... Sultanina
- Sultanpur ... Summa technologiae
- Summa theologiae ... summum bonum
- summum dorsum ... Sun, Temple of the
- Sun, Temple of the ... sunflower starfish
- Sunflower State ... SUNY
- śūnya ... super heavyweight
- Super Jock ... superintelligence
- Superintelligence ... Superstrings, Runes, The Norns, Gordian Knot
- supersulfated cement ... supreme being
- supreme being ... surcote
- surd ... surgical expense insurance
- surgical extirpation ... surround inhibition
- Surrounded by Time ... Sŭshtinska Sredna Mountains
- Sushun ... Sutherland, Donald McNichol
- Sutherland, Earl W., Jr. ... Suzong
- Suzuka ... Sveti Naum
- Sveti Nikola, Mount ... Swaminathan, V. V.
- Swammerdam valve ... Swarthmore College
- Swartkrans ... sweet alison
- sweet almond ... Sweetheart of the Rodeo
- Sweethearts ... swing bridge
- swing dance ... Swoopes, Sheryl
- Swoopes, Sheryl Denise ... Syllabus der Pflanzennamen
- Syllabus of A Course of Lectures on Chemistry ... Symmetrel
- symmetria ... Symphony No. 3 in E-flat Major
- Symphony No. 3 in E-flat Major, Op. 55 ... synarthrosis
- Synbranchiformes ... synoptic weather map
- synorchism ... Syracuse, Battle of
- Syracuse, Siege of ... systematic desensitization
- systematic error ... szekely gulyas
- Szekely, Louis ... Sʿadad-Dīn