plural noun
Isi·​dae | \ ˈīsəˌdē, ˈizə-\

Definition of Isidae 

: a family of gorgonians having an axis composed of alternating horny and calcareous joints

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History and Etymology for Isidae

New Latin, from Isis, type genus (from Greek, originally Egyptian goddess of motherhood and the family) + -idae

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