define ectoplasm
Ectoplasm (paranormal) Ectoplasm (from the Greek ektos, meaning outside, and plasma, meaning something formed or molded) is a term coined by Charles Richet to denote a substance or spiritual energy exteriorized by physical mediums. Ectoplasm is said to be associated with the formation of spirits. Ectoplasm is considered by some to be a hoax, fashioned from cheesecloth, gauze or other natural substances.