Pronunciation: various suggestions have been made: ['akkio] (AK-ee-o) - classical latin (film) ['aksio] (Ak-see-o) - (audiobook) ['aesio] (Ak-see-o) - (Scholastic) English

Description: This charm summons an object to the caster, potentially over a significant distance. It can be used in two ways: by casting the charm, and then naming the object desired ("Accio Firebolt"), or by pointing the want at the desired object during or immediately following the incantation to "pull" it toward the user. In either case, the caster must concentrate upon the object they wish to summon in order for the charm to succeed . The caster doesn't necessarily need to know the location if they say the name of the object to be summoned. This is proven when Hermione Granger explains in 1997 that she summoned the Horcrux books from Dumbledore's office by merely saying "Accio Horcrux books!" while in Gryffindor tower.

Seen/Mentioned: Harry Potter summones his broom to complete the first task of the Triwizard Tournament in 1994, as well as to summon the portkey to escape Lord Voldermort  and the Death Eaters in the Little Hangleton Graveyard in 1995. It failed to summon Horcurxes in 1997, and Harry failed to summon a falling Rubeus Hagrid . It was also used as a quicker way to find objects in Hermione's depth-enlarged beaded handbag, and was used as a quick and effective way of fishing ("Accio Salmon").

Notes: The summoning charm is limited only to items and small, as it has been shown incapable to summon people. And it is still possible for items to be enchanted so as to be impossible to summon, like the horcurxes and Harry's cloak of Invisibility.

Etymology: The Latin word accio means "i call" or "i summon".