[ ek-tuh-plaz-uh m ]
/ ˈɛk təˌplæz əm /


Biology. the outer portion of the cytoplasm of a cell.Compare endoplasm.
Spiritualism. the supposed emanation from the body of a medium.

Origin of ectoplasm

First recorded in 1880–85; ecto- + -plasm

Related forms

ec·to·plas·mic, ec·to·plas·mat·ic [ek-tuh-plaz-mat-ik] /ˌɛk tə plæzˈmæt ɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for ectoplasm

British Dictionary definitions for ectoplasm


/ (ˈɛktəʊˌplæzəm) /


cytology the outer layer of cytoplasm in some cells, esp protozoa, which differs from the inner cytoplasm in being a clear gelSee also endoplasm
spiritualism the substance supposedly emanating from the body of a medium during trances

Derived Forms

ectoplasmic, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012