DISSENDIUM
This spell opens a secret passageway in the statue of the one-eyed witch. Of
course it was invented by the infamous makers of the Marauders' Map; Mooney,
Wormtail, Padfoot, and Prongs.
Middle English: “distenden“
Latin: “distendere“; dis + tendere, meaning to
stretch.
Book: Prisoner of Azkaban