Definition of statocyst in English:



  • A small organ of balance and orientation in some aquatic invertebrates, consisting of a sensory vesicle or cell containing statoliths.

    Also called otocyst
    • ‘In addition, the association of statocysts with mechanoreceptors further suggests that these ancient sense organs are distantly related to the vertebrate ear, linking sight and sound.’
    • ‘Turbellarians sense their environment with statocysts, chemoreceptors, and photoreceptors.’
    • ‘These statocysts are filled with fluid and lined with sensory cells.’
    • ‘There are tiny sense organs called statocysts with which food can be detected, but otherwise no trace of eyes or other features normally associted with a head.’
    • ‘Acanthaster planci are insensitive to touch and gravity, as they lack statocysts.’