Cistem Aperio

Cistem Aperio is a charm that is used to open chests.

Known uses

 * Tom Riddle used this spell to open the chest in which Aragog lived in Hogwarts Castle.

Etymology
Aperio is Latin for open, uncover, to uncover, lay bare, reveal, or make clear.

Behind the scenes

 * This spell does not appear in the books.Severus_spell.JPG casting the spell]]
 * Severus Snape may have used this spell to open Alastor Moody's trunk in the film adaptation of Harry Potter and the Goblet of Fire.

Appearances

 * Harry Potter and the Chamber of Secrets (film)
 * Harry Potter and the Goblet of Fire (film)