ghostology

plural ghostologies

1. uncountableusuallyThe knowledge or study of ghosts or spirits; the science of the supernatural; spiritism.

   Experts in ghostology know exactly, where ghosts live, how they behave, how to deal with them, how to make them appear and disappear.

   1957, William L. Fischer, Critical Notes on Evolution, page 30

   2 more examples

   It did not lessen Septimius's surprise, however, to think that such a singular being was established in the neighborhood without his knowledge; considered as a real occurrence of this world, it seemed even more unaccountable than if it had been a thing of ghostology and witchcraft.

   a. 1865 (date written; first published 1872 January–August), Nathaniel Hawthorne, edited by Una Hawthorne, Septimius Felton; or The Elixir of Life, Boston, Mass.: James R[ipley] Osgood and Company, published 1872, →OCLC, page 75

   This, as all students of ghostology are aware, has frequently been the case; and it was precisely the case with the ghost seen by the famous Lord Brougham, […]

   1908, H. Addington Bruce, “The Ghost Seen by Lord Brougham”, in Historic Ghosts and Ghost Hunters