Definition of Dicyemida
: an order or other division of Mesozoa comprising minute ciliated vermiform internal parasites of cephalopod mollusks and occurring in a nematogen phase in the young host and in a rhombogen phase in the sexually mature host — compare orthonectida
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Origin and Etymology of dicyemida
New Latin, from Dicyema, genus of Mesozoa (from di- + Greek kyēma embryo; from the 2 types of larvae produced at different stages) + -ida
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