plural noun
Mal·​dan·​i·​dae | \malˈdanəˌdē\

Definition of Maldanidae 

: a family of slender cylindrical polychaete worms having rudimentary parapodia, lacking differentiated gills, and living in sand tubes

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History and Etymology for Maldanidae

New Latin, from Maldane, type genus + -idae

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to express warning or disapproval

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