from The Century Dictionary.

  • noun One of the little bodies or cavities of a cœlenterate, as a jellyfish or sea-nettle, containing a coiled elastic thread that springs out with stinging effect when the creature is irritated; an urticating-organ; a nematocyst; a lasso-cell; a cnida.
  • noun An occasional name of a seed-animalcule or spermatozoön.


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