trichocyst

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trich·o·cyst

 (trĭk′ə-sĭst′)
n.
An organelle in certain protozoans, especially ciliates, consisting of filamentous fibers that are discharged suddenly.

trich′o·cys′tic adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

trichocyst

(ˈtrɪkəˌsɪst)
n
(Zoology) any of various cavities on the surface of some ciliate protozoans, each containing a sensory thread that can be ejected
ˌtrichoˈcystic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

trich•o•cyst

(ˈtrɪk əˌsɪst)

n.
a small sac in certain protozoans that contains a hairlike stinger.
[1850–55]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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Expression of human hair keratin basic 1 in pilomatricoma is restricted to trichocystic differentiation areas: A study of 128 cases.