| S Doradus ... Sabato, Ernesto |
| Sabbatarianism ... Sackville, Thomas, 1st Earl of Dorset |
| Sackville-West, V ... safety |
| safety engineering ... Sahibdin |
| Sahil, As- ... Saint Clair, Lake |
| Saint Clement's Island ... Saint Joseph's University |
| Saint Kilda ... Saint Vincent, Cape |
| Saint Vincent, Gulf ... Saint-Louis |
| Saint-Malo ... sakaki |
| Sakakura Junzo ... Salcedo |
| Salchow, Ulrich ... Salisbury |
| Salisbury ... salt glaze |
| salt karst ... Sam Saen Thai |
| sama' ... Samoa |
| Samory ... San Bernardino Pass |
| San Blas ... San Jose |
| San Jose ... San Nicolas de los Arroyos |
| San Pablo ... Sancho IV |
| Sancho IV ... sandfish |
| sandgrouse ... Sangster, Margaret Elizabeth Munson |
| sanguine ... Santa Barbara |
| Santa Barbara ... Santalaceae |
| Santalales ... Sao Carlos |
| Sao Cristovao ... sapwood |
| Saqalibah ... Sardinia |
| Sardinian language ... Sarti, Giuseppe |
| Sarton, George Alfred Leon ... satinwood |
| satire ... sauna |
| Saura sect ... savory |
| Savoy ... Sayyid Dynasty |
| Sazonov, Sergey Dmitriyevich ... scarecrow |
| Scarfe, Gerald ... Schawlow, Arthur L. |
| Schechter, Solomon ... Schizaeaceae |
| schizocoelomate ... Schoeck, Othmar |
| Schoelcher, Victor ... Schuller, Gunther |
| Schulmeister, Karl ... Schweitzer, Albert |
| Schwenckfeld, Kaspar ... Scone |
| Scone ... Scott, Sir Peter Markham |
| Scott, Sir Walter, 1st Baronet ... Scruggs, Earl |
| scrum ... sea serpent |
| sea snake ... Sebastian |
| Sebastian Vizcaino Bay ... Sedgwick, Adam |
| Sedgwick, Anne Douglas ... segoni-kun |
| Segou ... Selborne, Roundell Palmer, 1st Earl of, Viscount Wolmer Of Blackmoor, Baron Selborne Of Selborne |
| Selborne, William Waldegrave Palmer, 2nd Earl of, Viscount Wolmer Of Blackmoor, Baron Selborne Of Selborne ... Selten, Reinhard |
| Selvon, Samuel ... Sendai |
| Sendak, Maurice ... separation |
| separation and purification ... sergeanty |
| Sergeyev, Konstantin Mikhailovich ... Servan-Schreiber, Jean-Jacques |
| Servandoni, Giovanni Nicolo ... settlement |
| Settlement, Act of ... Sevilla |
| Sevilla, University of ... Seyss-Inquart, Arthur |
| Sfantu Gheorghe ... Shah Alam |
| Shah diamond ... Shan language |
| Shan Plateau ... Sharon |
| Sharon, Ariel ... Shays, Daniel |
| Shazar, Zalman ... sheldgoose |
| Sheldon, Charles Monroe ... Shepherdstown |
| Shepp, Archie ... Shi'ite |
| Shiba Kokan ... Shimoga |
| Shimomura Kanzan ... shire |
| Shire ... Sholokhov, Mikhail Aleksandrovich |
| Shomolu ... showboat |
| shozoku ... Shushigaku |
| Shushtar ... Sickert, Walter Richard |
| Sickingen, Franz von ... Siemens, Werner von |
| Siemianowice Slaskie ... Signorelli, Luca |
| Signoret, Simone ... silicon carbide |
| Silicon Valley ... silver fox |
| silver king ... Simon Of Sudbury |
| Simon the Apostle, Saint ... Sindbad the Sailor |
| Sindh ... Sino-Tibetan languages |
| Sinop ... siserskite |
| Sishu ... Sixtus IV |
| Sixtus V ... sketch |
| Skhul ... Skylab |
| Skyros ... Slessor, Kenneth |
| Slessor, Sir John Cotesworth ... Slowacki, Juliusz |
| sludge ... Smith, Al |
| Smith, Amanda ... Smith, William Robertson |
| Smith, Zilpha Drew ... Snake River |
| snake-necked turtle ... snowflake |
| snowman porcelain ... social learning |
| social mobility ... sodium chloride |
| sodium deficiency ... Sokolow, Nahum |
| Sokoto ... solid solution |
| solid-state detector ... Solzhenitsyn, Aleksandr Isayevich |
| soma ... Sonderborg |
| Sonderbund ... Sopwith, Sir Thomas Octave Murdoch |
| Sor-Trondelag ... sotto in su |
| souari nut ... South Africa, Church of the Province of |
| South Africa, history of ... South Orange Village |
| South Orkney Islands ... Southern Connecticut State University |
| Southern Dynasties ... Spaatz, Carl |
| space ... Sparks, Jared |
| sparrow ... speedometer |
| speedway racing ... sphagia |
| sphalerite ... spinneret |
| spinning ... Spohr, Louis |
| spoils system ... spring |
| Spring and Autumn Period ... squash rackets |
| squash tennis ... stabile |
| stability ... Stamboliyski, Aleksandur |
| Stambolov, Stefan Nikolov ... stanza |
| Staphylococcus ... Statesman, The |
| statics ... steeplechase |
| steer roping ... stem cell |
| Stemann, Poul Christian ... Stephenson, Robert |
| Stephenson, William ... Stevens, John |
| Stevens, John Frank ... stilbite |
| stiletto fly ... stock exchange |
| stock market crash of 1929 ... Stone, Barton W |
| Stone, Edward Durell ... Stornoway |
| Storr, Paul ... Strangford Treaty |
| strangler fig ... Strayhorn, Billy |
| Strbske Pleso ... Strode, William |
| Strode, Woody ... student aid |
| Student Nonviolent Coordinating Committee ... styrene |
| Styron, William ... Suchet, Louis-Gabriel, duke d'Albufera da Valencia |
| Suchocka, Hanna ... Suffolk Coastal |
| Suffolk Resolves ... sukiyaki |
| Sukkoth ... Sullivan, Louis |
| Sullivan, Mick ... Sumner, Charles |
| Sumner, James Batcheller ... sundial |
| Sundiata ... Supilo, Frano |
| Suppe, Franz von ... surplus value |
| Surquillo ... Sutherland, Dame Joan |
| Sutherland, Earl W., Jr. ... Sverdrup, H.U. |
| Sverdrup, Johan ... swastika |
| Swat River ... Swift, Jonathan |
| swiftlet ... Syeverodonetsk |
| Sykes, Sir Mark, 6th Baronet ... synchronous motor |
| synchrotron ... Syvash |
| Syzran ... |
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