Glacius
Incantation	Glacius (GLAY-see-us)
Type	Charm
Light	None, but the air generated is so cold it turns mosture in the air into white frost
Effect	Conjures freezing cold air

[Source]

Glacius is a freezing charm used to put out fires and create ice blocks. The spell is described as a "charm that conjures a blast of freezing cold air from the end of the wand"^[1]. The air is so cold it can freeze several inches of water solid within seconds, making it solid enough for at least an average-sized thirteen-year-old to walk across.

Etymology

From obsolete French glacieux, from Latin glaciēs (“ice”). It could also be from Latin glaciās, meaning "you freeze".

Behind the scenes

• It can be bought at Wiseacre's Wizarding Equipment in Diagon Alley in LEGO Harry Potter: Years 1-4.
• During the lessons in LEGO Harry Potter: Years 1-4 if the player irritates the Professor he/she will cast Glacius at the player and put him/her into a block of ice.
• In the game version Harry Potter and the Prisoner of Azkaban (video game), his charms teacher arranged a test for Harry, in which the latter had to use this spell to freeze some running water; he then had to slide on it without the ice breaking, which would then guarantee that he passed the test; later on in the year, he had to use the spell to make a lizard freeze.

See also

• Extinguishing spell
• Flame-Freezing Charm
• Freezing Charm

Appearances

• Harry Potter and the Prisoner of Azkaban (video game) (First appearance)
• Harry Potter and the Goblet of Fire (video game) (GBA version only)
• Harry Potter and the Deathly Hallows: Part 2 (video game) (Nintendo DS only)
• LEGO Harry Potter: Years 1-4
• LEGO Harry Potter: Years 5-7

Notes and references

Charms (class)
Professors: Filius Flitwick
Textbooks: The Standard Book of Spells · Achievements in Charming · Quintessence: A Quest
Charmbook writers and charm developers: Miranda Goshawk · Scarpin · Felix Summerbee · Randolph Keitch · Basil Horton · Mnemone Radford · Elliot Smethwyck · Jarleth Hobart · Delfina Crimp · Orabella Nuttley · Levina Monkstanley · Fred Weasley · George Weasley
Charms studied at Hogwarts: Levitation Charm · Fire-Making Charm · Softening Charm · Skurge · Aresto Momentum · Cheering Charm · Freezing Spell · Seize and Pull Charm · Summoning Charm · Banishing Charm · Silencing Charm · Mending Charm · Reductor Curse · Colour Change Charm · Growth Charm · Water-Making Spell · Locomotion Charm · Vinegar into Wine · Bird-Conjuring Charm

Defence Against the Dark Arts (D.A.D.A.)
Professors: Galatea Merrythought · Quirinus Quirrell · Gilderoy Lockhart · Remus Lupin · Barty Crouch Jr. (as Alastor Moody) · Dolores Umbridge · Severus Snape · Amycus Carrow (as Dark Arts teacher)
Textbooks: The Dark Forces: A Guide to Self-Protection · Break with a Banshee · Gadding with Ghouls · Holidays with Hags · Travels with Trolls · Voyages with Vampires · Wanderings with Werewolves · Year with the Yeti · The Essential Defence Against the Dark Arts · Defensive Magical Theory · Dark Arts Defence: Basics for Beginners · Confronting the Faceless
D.A.D.A. at Hogwarts: Classroom 3C · Temporary Classroom · Tower · Professor's Office · Storeroom · Staircase · Lesson Cup · Race Cup · Dumbledore's Army
Spells covered under the subject: Curse of the Bogies · Knockback Jinx · Verdimillious Charm · Verdimillious Duo Spell · Verdimillious Tria · Wand-Lighting Charm · Freezing Spell · Seize and Pull Charm · Patronus Charm · Killing Curse · Cruciatus Curse · Imperius Curse · Impediment Jinx · Reductor Curse · Stunning Spell · Shield Charm · Nonverbal spells · Hex-deflection · Hex-Breaker · Hex Zapper
Creatures covered under the subject: Vampire bats · Iguanas · Cornish Pixies · Werewolves · Vampires · Hinkypunks · Boggarts · Red Caps · Kappas · Grindylows · Inferius