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See more synonyms for ectosarc on Thesaurus.com
noun Biology.
  1. the ectoplasm of a protozoan (opposed to endosarc).
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Origin of ectosarc

First recorded in 1875–80; ecto- + -sarc
Related formsec·to·sar·cous, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for ectosarc

Historical Examples

  • Note also many minute oval sacs lying side by side in the ectosarc.

    Elementary Zoology, Second Edition

    Vernon L. Kellogg

  • The cytoplasm is very highly differentiated: especially the ectoplasm or ectosarc.

British Dictionary definitions for ectosarc


  1. zoology the ectoplasm of an amoeba or any other protozoan
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Derived Formsectosarcous, adjective

Word Origin

C19: ecto- + -sarc, from Greek sarx flesh
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