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.

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

trich•o•cyst

(ˈtrɪk əˌsɪst)

n.
a small sac in certain protozoans that contains a hairlike stinger.
[1850–55]
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References in periodicals archive ?
Trichocyst release can be observed at ~100x magnification using a compound microscope (see Figure 3).
Recent evidence suggests that trichocyst discharge causes swimming reversal in Paramecium (Harumoto, 1994) and thus functions for defense, physically driving prey ciliates away from predators (Harumoto and Miyake, 1991; Knoll et at.