noun Cell Biology.
the inner portion of the cytoplasm of a cell.Compare ectoplasm(def 1).
Origin of endoplasm
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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
A central, less viscous portion of the cytoplasm that is distinguishable in certain cells, especially motile cells and protozoa.
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