plural noun
Tar·​an·​tu·​li·​dae | \ ˌtarən‧ˈt(y)üləˌdē\

Definition of Tarantulidae

: a family of whip scorpions (order Pedipalpida) that lack the caudal prolongation of other forms and have an extremely long slender first pair of legs

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History and Etymology for Tarantulidae

New Latin, from Tarantula, type genus + -idae

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to spread over or through

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