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| an alternative name for the invertebrate phylum Coelenterata, giving emphasis to the stinging structures as characteristic of the phylum. |
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| The Ctenophora are a phylum of animals that live in marine waters worldwide. |
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explosive cell containing one giant secretory organelle or cnidae that define the phylum Cnidaria |
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| A capsule within specialized cells of certain coelenterates, such as jellyfish, containing a barbed, threadlike tube that delivers a paralyzing sting when propelled into attackers and prey. |
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