nematocyst definition

  • noun:
    • A capsule within specialized cells of particular coelenterates, such as for instance jellyfish, containing a barbed, threadlike pipe that delivers a paralyzing sting when propelled into attackers and prey. Also called stinging cellular.
    • A capsule, in some cnidarians, containing a barbed, threadlike pipe that delivers a paralyzing sting
    • A lasso mobile, or bond cell. See lasso mobile, under lasso.
    • A thread-cell or lasso-cell; a cnidocell or cnida; among the organs of offense and defense particular to c┼ôlenterates, as jellyfishes, in the form of which they sting. See cuts under cnida, Actinozoa, and Willsia.

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