• synonyms


[spawr-uh-sist, spohr-]
noun Biology.
  1. a walled body resulting from the multiple division of a sporozoan, which produces one or more sporozoites.
  2. a stage in development of trematodes that gives rise, asexually, to cercaria.
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Origin of sporocyst

First recorded in 1860–65; sporo- + -cyst
Related formsspo·ro·cys·tic [spawr-uh-sis-tik, spohr-] /ˌspɔr əˈsɪs tɪk, ˌspoʊr-/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for sporocyst

Historical Examples

  • Here the embryo sheds its ciliated integument and is transformed into a sporocyst.

    A System of Practical Medicine By American Authors, Vol. II


  • Within this snail—Linnæa truncatula—the egg develops into a sac-like body, called a sporocyst.

  • We sometimes find the cercarian age passed over, and the young distomes appear abundantly without tails in the sporocyst.

  • We may give more than one description of the distomian embryo as it leaves its sporocyst.

  • When stripped of their swimming tunic, these young distomes have the form of a bag, which for a long time was called a sporocyst.

British Dictionary definitions for sporocyst


  1. a thick-walled rounded structure produced by sporozoan protozoans, in which sporozoites are formed
  2. the saclike larva of a trematode worm that produces redia larvae by asexual reproduction
  3. any similar structure containing spores
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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

sporocyst in Medicine


  1. A larval form in many trematode flatworms that develops in the body of its molluscan intermediate host.
  2. A secondary cyst that develops from a sporoblast and produces within itself one or several sporozoites.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.