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from The Century Dictionary and Cyclopedia

  • n. One of the peculiar filiferous cell-like structures of cœlenterates, endowed with ability to throw out with astonishing rapidity the contained thread, which has the property of exciting a stinging or pricking feeling on sentient surfaces; an urticating organ; a nematocyst or thread-cell; a cnidocyst or cnida; a nettling-cell. See cut under cnida.


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