Home / Dictionary Meaning of ectoplasm Find definitions for: ec•to•plasm Pronunciation: (ek'tu-plaz"um), [key] — n. the outer portion of the cytoplasm of a cell. Cf. endoplasm. the supposed emanation from the body of a medium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ectoplasm (Thesaurus) ectopic pregnancy ectoproct Related ContentDaily Word Quiz: opprobriumAnalogy of the Day: Today's AnalogySpelling Bee: Today's Spelling BeeKids' Word Quiz: preparatoryCrossword: Crossword Puzzle GuideFrequently Misspelled WordsFrequently Mispronounced WordsEasily Confused WordsWriting & Language Related Content Daily Word Quiz: fresco Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language Download Poptropica and play for free!Explore a limitless universe of uncharted islands