• WordNet 3.6
    • n Cydippidea ctenophores having two long pinnate tentacles
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Century Dictionary and Cyclopedia
    • cydippidea An order of tentaculate Ctenophora. They have the body of spherical, cylindrical, or compressed form, with 2 simple or branched tentacles retractile within tentacular sheaths, and the meridional and stomodeal canals not produced into a peripheral-canal system. The order includes the families Mertensidæ and Pleurobrachidæ.
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