plural noun Ci·dar·i·dae \sə̇ˈdarəˌdē\

Definition of Cidaridae

  1. :  a family of sea urchins including all recent members of the order Cidaroida and comprising a number of forms that are widely distributed in warm seas

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Origin and Etymology of cidaridae

New Latin, from Cidaris, type genus + -idae

Seen and Heard

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to cast off or become cast off

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