Ectoplasm n. : The outer transparent layer of protoplasm in a developing ovum.

Ectoplasm n. : The outer hyaline layer of protoplasm in a vegetable cell.

Ectoplasm n. : The ectosarc of protozoan.

Example:
I discovered some Ectoplasm in my pants. what is a logical explanation for this?

Taxonomy
Ectoplasm, substance, free encyclopedia, ghosts, body, excreted, slime, viscous, physical mediums, popular culture, white substance, the substance, Paranormal terminology, nose, mouth, Prometheus Books, Charles Richet, Parapsychology.

Defination from the web:
Ectoplasm (from the Greek ektos, "outside", + plasma, "something formed or molded") is a term coined by Charles Richet to denote a substance or ... Ectoplasm is said to be produced by physical mediums when in a trance state. ... Ectoplasm has become a staple in fictional supernatural lore. ...