• synonyms


[greg-uh-rahyn, -er-in]
  1. a type of sporozoan parasite that inhabits the digestive and other cavities of various invertebrates and produces cysts filled with spores.
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  1. having the characteristics of or pertaining to a gregarine or gregarines.
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Origin of gregarine

1865–70; < New Latin Gregarina name of type, equivalent to Latin gregār(ius) (see gregarious) + -īna -ine1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for gregarine

Historical Examples

  • A gregarine, Diplocystis, in the haemocoele of the roach, Blaberus craniifer Burm.

    The Biotic Associations of Cockroaches

    Louis M. Roth

  • For at last they become an Acinetan or a Gregarine, exactly like the parent-cell from which they arose as embryos.

British Dictionary definitions for gregarine


  1. any parasitic protozoan of the order Gregarinida, typically occurring in the digestive tract and body cavity of other invertebrates: phylum Apicomplexa (sporozoans)
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adjective Also: gregarinian (ˌɡrɛɡəˈrɪnɪən)
  1. of, relating to, or belonging to the Gregarinida
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Word Origin

C19: from New Latin Gregarīna genus name, from Latin gregārius; see gregarious
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

gregarine in Medicine


  1. Any of various sporozoan protozoans of the order Gregarinida that are parasitic within the digestive tracts of various invertebrates.
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  1. Of or belonging to the order Gregarinida.
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Related formsgreg′a•rini•an (-rĭnē-ən) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.