Ectoplasm is an attempt to describe the substance which ghosts are made of.
It should be mentioned that it has never been possible to physically examine ectoplasm.
Ectoplasm is in spiritual circles a solid proof of the presence of a ghost or a spirit. During seances it is reported that ectoplasm can ooze from all orifices of spiritual mediums. This ectoplasm may take the form of a body, face or an entire body. Numerous photos are taken are seances, of this substance. However, is has never been possible to produce this substance under controlled laboratory conditions.