 | Sub-bass clef When the F-clef is placed on the fifth line, it is called the sub-bass clef. It is identical to the treble clef transposed down 2 octaves. |
 | Subgenius Sacred IKON Subgenius Sacred IKON |
 | Sublimation (alternate #1) An alchemical symbol used to indicate sublimation. |
 | Sublimation (phase transition) Sublimation is the transition of a substance directly from the solid phase to the gas phase without passing through an intermediate liquid phase. |
 | Subset A subset of a group is a set that contains some or all of the elements of a set. |
 | Subterranean Dragon Egg Icon used to indicate a Subterranean Dragon egg in the game Dragonvale. |
 | Subtraction Indicates to subtract (take away) one value from another. |
 | Subtraction or Addition means the difference and the sum of two values |
 | Sudarshan Chakra The Sudarshan Chakra is a spinning disk like weapon that has 108 saw-like edges. It is said to be the weapon of the Hindu god Lord Vishnu. |
 | Sulfer of Sulphur Achemical symbol for sulfer. |
 | Sulfuric acid A symbol used in 18th century chemistry to indicate sulfuric acid. |
 | Sulfuric acid (alternate) A sign used to indicate sulfuric acid in the early days of chemistry. |
 | Sulphur (alternate #1) A symbol used to indicate sulphur in alchemical practices. |
 | Sulphur (alternate #2) A symbol used to indicate sulphur in alchemical practices. |
 | Sulphur (alternate #3) A symbol used to indicate sulphur in alchemical practices. |
 | Sulphur (alternate #4) A symbol used to indicate sulphur in alchemical practices. |
 | Sulphur (alternate #5) A symbol used to indicate sulphur in alchemical and early chemical practices. |
 | Sulphur (alternate #6) A symbol used to indicate sulphur in alchemical practices. |
 | SUMA Chess piece The suma pawn (♙♟) is a two square wide pawn from a custom rule in Samurai chess placed in the 3rd row as 1st move -- each player has one SUMA pawn. |
 | Summation The sum of the results of a function over a range of values. Basically an upper-case Sigma. |
 | Summer An old Germanic sign for the season of Summer, used in clog almanacs. |
 | Summer (alchemy) One of the time signs used by alchemists, this one representing summer. |
 | Sun The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields. |
 | Sun Cross or Wheel Cross The so-called sun cross or "wheel cross", a cross inside a circle, is frequently found in the symbolism of prehistoric cultures, particularly during the Neolithic to Bronze Age periods. |
 | Sun Symbol The Sun symbol was of great importance to all of the Native American Indian tribes. The sun symbol is depicted in a variety of ways, three of the symbols are shown on the image. |
