Definition of trichocyst in English:



  • Any of numerous minute rod-like structures, each containing a protrusible filament, found near the surface of ciliates and dinoflagellates.

    • ‘Discharged trichocysts remain clustered around the cell surface and can easily be visualized under dark-field light microscopy with a x10 objective.’
    • ‘The discharge or nondischarge of the trichocyst was observed by adding a drop of saturated picric acid to the cells.’
    • ‘These structures do not correspond to trichocysts seen in phase micrographs (data not shown) but connect both horizontally and vertically to other vesicular-like signals.’
    • ‘Most plates are penetrated by trichocyst pores which may lie in pits.’
    • ‘After biogenesis, trichocysts migrate to the plasma membrane and are anchored to predetermined sites.’