A heptalogy (/hɛpˈtælədʒi/; from Greekἑπτα-hepta-, "seven" and -λογία-logia, "discourse") is a compound literary or narrative work that is made up of seven distinct works.[1] While not in wide usage, it has been used to describe such examples as the Harry Potter series of books,[2] and The Chronicles of Narnia.[3]
^"77 things about the #7". The Canberra Times. January 2, 2007. p. A6. A series of seven works of art is called a heptalogy. In the case of films, Harry Potter and The Chronicles of Narnia (both to be completed), are examples.
Robert McCrum (July 22, 2007). "The Hallows, and then the goodbyes: Tolkien it isn't, but J K Rowling's latest marks a triumphant literary achievement". The Observer. p. 17. The completion of this world-shaking heptalogy is something close to a triumph.
^Christopher, Joe R. (2015). "C. S. Lewis's Problem with 'The Franklin's Tale'". In Khoddam, Salwa; Hall, Mark R.; Fisher, Jason (eds.). C.S. Lewis and the Inklings: Reflections on Faith, Imagination and Modern Technology. Newcastle: Cambridge Scholars Press. p. 128. ISBN9781443882965. Lewis had a secret structure to the Narnian heptalogy