Ectoplasm
/ˈektəʊplæzəm/
Definition 1 of 2
Pro Tip 1/3Spiritualistic Origins
Originates from spiritualism and is often used in contexts related to paranormal phenomena. 
The seance participants claimed to see ectoplasm forming around the psychic.
Pro Tip 2/3Cultural Skepticism
May evoke skepticism or be associated with hoaxes, as its existence is not scientifically proven. 
He dismissed the ectoplasm in the photograph as merely a trick of the light.
Pro Tip 3/3Historical Use
Common in 19th and early 20th-century literature; now considered archaic and less recognized. 
The Victorian novel featured a ghostly apparition dripping with ectoplasm.