Sage (Plant) - a plant which Centaurs burn and use the fumes and flames to help clarify their interpretations when they stargaze.

Salamander - a small, orange lizard that lives in fire. As a matter of fact, the salamander can put a fire out on contact because it has skin with an icy temperature.

Scourgify (Spell) - a cleaning spell, the elimination of a mess.

Scrying - A form of Divination where the diviner stares at a clear or reflective surface until images begin to form, either within the object or within the mind of the scryer.

Scurvy-grass (Plant) - an ingredient in Confusing and Befuddlement Draughts.

Sectumsempra (Spells) - a Half-Blood Prince spell, which cuts the victim.

Selkies - see Mermaid/Merman/Merpeople

Serpensortia (Spell) - causing a large serpent to burst from the end of a wand.

Shield Charm (Spell) - a spell that deflects curses and other spells.

Shrake - an Atlantic fish said to have been created to take revenge on muggle fishermen who insulted a wizard sailing team in the early 1800's. This fish is covered in spines and it rips holes in the fishing folk's nets in that particular patch of sea.

Sibyl - a fortune-telling woman, named after a prophetess of Greek legend, Sibylla, a daughter of Zeus. Sibyls existed in both Greek and Roman mythology. Legend has ten of them living in the ancient world, scattered throughout Babylonia, Persia, Egypt, Libya and Greece. Unlike most diviners, who provided their prophecies upon request (or payment), the sibyl foretold events whenever inspiration moved her to do so, frequently writing her predictions on leaves.

Sirius Black - Harry's godfather, named after the brightest star in the sky in Canis Major, often called the "dog star".

Slytherin - one of the four houses of Hogwarts School of Witchcraft and Wizardry.

Slytherin, Salazar - founder of Slytherin House

Smethwyk, Elliot - inventor of the Cushioning Spell (1820), which allows the rider of a broom to float above the handle rather than actually sitting on it. See Broomstick

Snake - all over the world, snakes have played a part of many different cultures, being not only evil but also associated with healing and wisdom. Interest in snakes predates the written word. Most snakes are harmless. Of 2,700 kinds of snakes, only about four hundred are poisonous. Fewer than fifty species pose significant danger to humans.

Snape - a town in Wales, and not to mention, Professor Snape.

Sneezewort (Plant) - an ingredient in Confusing and Befuddlement Draughts

Snidget - a most rare and protected bird species, the walnut-sized golden snidget is completely round with a long, rapier-thin beak and glistening ruby-like eyes. This bird is a very fast flier, able to change direction with uncanny skill and amazing speed, due to its rotational wing joints.

The feathers and eyes were highly prized and this species was almost hunted to extinction. A major saving factor was the substitution of the golden snitch for the snidget in Quidditch.

Sonorus (Spell) - to increase the volume of one's voice, even to the point of being able to make announcements to a entire arena full of wizards gathered for the Quidditch finals!

Sorcerer - see Magician see Wizard - a practioner of sorcery or magic. Sorcery comes from the Latin word sors, which means "casting of lots", "prophecy", or "fate".

Sorcerer's Stone/Philosopher's Stone - see Flamel, Nicholas - a substance that can turn lead into gold and produce an elixir of immortality

Specialis Revelio (Spell) - the incantation for Scarpin's Revelaspell, cast to identify the ingredients in a potion.

Spell - spoken or written, a spell is a word or phrase that has a magical effect upon people, animals, things or circumstances. One example is Hogwarts, which is under a spell that makes it seem nothing but a crumbling ruin to muggles. A negative spell is called a curse.

• Accio - a spell which calls the desired object to the wizard
• Aguamenti - a charm which conjures a stream of clear water from the wand of the caster
• Alohomora - cast to open locks
• Anapneo - the spell which clears one's airway, thus preventing choking
• Anti-gravity Mist - stepping into this mist produces the startling affect of turning the world upside down and making one feel as if they are suspended from the ground over the vast sky
• Aparecium - from Latin appareo meaning "to appear", a spell which makes invisible ink visible
• Apparate - a spell of teleportation/transportation from one place to another
• Avada Kedavra - the third Unforgivable Curse, also called "the killing curse".
• Avis - to conjure a flock of small birds
• Babbling Curse - causes the victim to babble uncontrollably
• Banishing Charm - rather than calling an object like Accio does, this charm sends it away
• Bat-bogey Hex - to enlarge another's bogies (boogers) to the size of bats, give them wings, and get them to attack the victim's face
• Bluebell Flames - a spell that creates a small blue fire which can burn almost anywhere, even underwater
• Bubble-Head Charm - used to surround someone's head with a bubble, which lets one breathe underwater
• Colloportus - a spell which seals doors
• Confundus - a charm that creates confusion
• Conjectivitus - to curse another's eyes into blurred vision
• Cruciatus - the second Unforgivable Curse, which causes intense, unimaginable pain in the victim
• Cushioning Charm - a spell that lets a rider float over the handle of his/her broom, invented by Elliot Smethwyk in 1820
• Dark Mark - see Morsemordre
• Deletrius - erases the images of past spells revealed by Priori Incantatem and might be used to counter the effects of other spells
• Densaugeo - a curse that causes teeth to grow larger and larger
• Diffindo - the spell to cut something open or break it into pieces
• Disapparate - a spell to make one vanish (and reappear elsewhere)
• Disillusionment - a charm hiding the true, magical nature of something, such as the example of hiding Hogwarts from muggles, which is mentioned above. It works by making something or someone like a chameleon, which can assume its background colors in order to blend in, in effect becoming invisible as far as the eye is concerned
• Dissendium - to open a secret passage
• Engorgio - induces something to swell in size
• Ennervate - a reversal of Stupefy (a stun spell), used to revive one who is unconscious
• Episkey - heals or repairs damage that has been inflicted on someone or something
• Evanesco - a spell which makes something vanish
• Expecto Patronum - see Patronus Charm
• Expelliarmus - to disarm another
• Ferula - conjuring a sling for a broken limb
• Fidelius - to hide a person, to protect one from the enemy
• Finite Incantatem - a stopping charm that ends all charms and hexes
• Flagrate - - wand magic that uses a fiery red line with which to draw out shapes, either in the air or upon an object.
• Flame Freezing Charm - a spell which changes the temperature of flames into comforting warmth, used by witches of the middle ages when they were being burned at the stake
• Four Point Spell - to turn a wand into a compass
• Furnunculus - the hex that causes horrible boils on its victim
• Homorphus Charm - used to turn werewolves back into humans
• Horn Tongue - a hex that puts a horn on someone's tongue
• Hover Charm - a charm that makes an item or items float
• Hurling Hex - makes moving objects, such as brooms, throw its rider off
• Impedimenta - to slow down the one pursuing you
• Imperious - the first Unforgivable Curse. This one allows the wizard to gain complete control over the actions of another.
• Imperturbable Charm - magic which creates a barrier on an object. The easiest way to test for this charm is to throw an item (which bounces off the "imperturbed" thing without ever touching it) in its direction.
• Impervius - a spell to waterproof something
• Incarcerous - a spell that creates ropes which bind someone
• Incendio - the fire-starting spell
• Instant Scalping - instantly removes hair
• Jelly Legs Jinx - which makes one's legs weak
• Killing Curse - the third Unforgivable Curse, also called "Avada Kedavra"
• Langlock - the Half-Blood Prince's jinx which glues one's tongue to the roof of one's mouth
• Levicorpus - the Half-Blood Prince's spell which up ends someone in the air as if they're suspended by an ankle
• Liberacorpus - Counterjinx to Levicorpus and created by the Half-Blood Prince
• Locomotor Mortis - the leg-locking curse
• Lumos - a spell used to create light
• Lumos Solarum - this spell creates a blast of light as bright as the sun
• Memory - a charm which causes any muggle who has witnessed or been part of any magic to forget what they have seen or experienced.
• Mobilarbus - moving objects
• Mobilcorpus - to move someone who is incapable of walking or moving
• Morsemordre - conjuring up the Dark Mark, an immense glowing green skull in the sky, with a snake coming out of its mouth. The symbol of Voldemort.
• Muffliato - a spell from the Half-Blood Prince, which causes buzzing in the ears of nearby people, effectively deafening them
• Nox - the spell that extinguishes light
• Obliviate - to erase the victim's memory
• Orchideus - a bunch of flowers bursting from the tip of a wand
• Patronus Charm/Expecto Patronum - used to protect one from a Dementor, or in rare circumstances, a Lethifold, this charm conjures up a "patronus", a figure (which has some personal meaning to the creator) produced from silvery magic. In Latin, "Expecto" is "to await" or "look for" and "Patronum" means patron saint. The translation is "Waiting for (or looking for or seeking) the patron saint."
• Permanent Sticking Charm - a spell which permanently adheres one object to another
• Petrificus - the petrifying spell that binds arms and legs together
• Portus - the spell that turns an object into a Portkey
• Priori Incantato - to redo a ghost image of the last spell cast by a wand
• Protean Charm - a spell named for Proteus, a prophetic god (from Greek myths) who served Poseidon and could change his shape as he wished. The object or objects this spell is cast over change shape, mimicking a chosen item a wizard causes to alter its form.
• Protego - a Shield Charm that deflects curses and spells. Protego comes from Latin and it means "to defend or protect".
• Quietus - a reverse of the Sonorus spell, or to return the speaker's volume to the normal range of a voice
• Reducio - used to reduce the size of an object
• Reducto - the Reducto Curse can blast objects out of the way or blast a passage through something solid
• Relashio - a spell that casts fiery sparks. Underwater, it shoots a jet of boiling water.
• Reparo - repairing something that has been broken
• Rictusempra - a tickling charm that makes people laugh uncontrollably
• Riddikulus - the spell used to disarm the Boggart by turning it into something silly, or ridiculous
• Scarpin's Revelaspell - See Specialis Revelio
• Scourgify - a cleaning spell, the elimination of a mess
• Sectumsempra - a Half-Blood Prince spell, which cuts the victim
• Serpensortia - causing a large serpent to burst from the end of a wand
• Shield Charm - a spell that deflects curses and other spells
• Sonorus - to increase the volume of one's voice, even to the point of being able to make announcements to a entire arena full of wizards gathered for the Quidditch finals!
• Specialis Revelio - the incantation for Scarpin's Revelaspell, cast to identify the ingredients in a potion
• Stupefy - a spell that renders someone unconscious
• Switching Spell - a form of Transfiguration which swaps the intended target with another item of the caster's choice
• Tarantallegra - making one's legs perform in quickstepping, uncontrollable jerks
• Tergeo - the spell that cleans up a person or an object
• Up - the command which summons a broom up into the wizard's outstretched hand. This is one of the first spells a student learns since everyone in first year is required to learn to fly from Madame Hooch
• Waddiwasi - a spell for removing gum from keyholes (and other objects, I presume?)
• Wingardium Leviosa - to make an object levitate

Sphinx - Greek mythology has the sphinx being a winged creature with the head and breasts of a human woman, and the body of a lion. This monster originated in Egypt, however, and was not confined to being female in nature. It was also without wings in its oldest incarnation, which was associated with the annual flooding of the Nile.

Spider - predatory arachnid with silk-spinning organs at the back end of its body; they spin silk to make cocoons for eggs or traps for their prey. Muggle world spiders are small, compared to the ones thriving in the Forbidden Forest.

Stinksap - see Mimbulus Mimbletonia

Streeler - from Africa and successfully exported to Asia, the Americas and Europe. This giant snail changes color every hour. It leaves behind a venomous slime trail that withers and burns all vegetation in its path. Its venom is one of a few substances that can kill Horklumps.

Stupefy (Spell) - to make someone unconscious, to stun the victim.

Swedish Short-Snout (Dragons) - its silver-blue skin is much sought after to manufacture protective shields and gloves. The Short-snout exhales a bright blue flame that reduces both bone and timber to ash in seconds.

Switching Spell (Spell) - see Switching Spell