plural noun Tri·onych·i·dae \ˌtrīəˈnikəˌdē\

Definition of Trionychidae

  1. :  a family of freshwater softshell turtles containing both fossil Tertiary and living forms in which the horny plates of carapace and plastron are replaced by leathery skin and constituting a distinct superfamily of Cryptodira

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Origin and Etymology of trionychidae

New Latin Trionych-, Trionyx, type genus + -idae

Seen and Heard

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to cast off or become cast off

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