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[en-duh-plaz-uh m] /ˈɛn dəˌplæz əm/
noun, Cell Biology.
the inner portion of the cytoplasm of a cell.
Compare ectoplasm (def 1).
Origin of endoplasm
First recorded in 1880-85; endo- + -plasm
Related forms
endoplasmic, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for endoplasm


(cytology) the inner cytoplasm in some cells, esp protozoa, which is more granular and fluid than the outer cytoplasm See ectoplasm (sense 1)
Derived Forms
endoplasmic, 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
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endoplasm in Medicine

endoplasm en·do·plasm (ěn'də-plāz'əm)
A central, less viscous portion of the cytoplasm that is distinguishable in certain cells, especially motile cells and protozoa.

en'do·plas'mic adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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