This was the most difficult day to come up with a topic for, because there just aren’t that many writing terms that begin with X. I went with Xanaduism because the name is derived from a poem I enjoy. Here’s a definition provided by Dr. L. Kip Wheeler of Carson-Newman University.
Academic research that focuses on the sources behind imaginative works of literature and fantasy. John Livingstone Lowes, in his publication The Road to Xanadu (1927), inspired the name, which in turn goes back to Coleridge’s visionary poem “Kubla Khan” (i.e., “In Xanadu did Kubla Khan a stately pleasure dome decree . . .”). More recently, the term has been used in a pejorative sense to describe scholarship involving dubious scrutiny of amorphous, difficult-to-prove sources, especially simplistic studies lacking any redeeming theoretical perspectives
So, if you write an essay about the orgin of a piece of literature and someone says you’re engaging in Xanaduism, they’re probably not complimenting you on your scholarship. I’ve never actually heard this term used in conversation, and don’t have anything else to say about it.
Since Coleridge’s “Kubla Khan” is in the public domain, I’ve included it below for your enjoyment, with another thought or two afterwards. Librivox has several audio recordings of this poem.