Etymologie [ "hO-k&s-'pO-k&s ] (noun.) 1647. Dates from the 17th century when used by jugglers and magicians as a nonsense magical incantation. Compact Oxford English Dictionary. http://www.askoxford.com/concise_oed/hocuspocus The Phrase Finder. http://www.phrases.org.uk/meanings/hocus-pocus.html. Some believe it is a corruption of the Latin words of institution hoc est corpus meum, although this is disputed.