plural noun Ten·thre·din·i·dae \ˌten(t)thrəˈdinəˌdē\

Definition of Tenthredinidae

  1. :  a family of Hymenoptera comprising all the sawflies or now more commonly including various typical sawflies — see tenthredinoidea

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Origin and Etymology of tenthredinidae

New Latin Tenthredin-, Tenthredo, type genus (from Greek tenthrēdōn, a kind of wasp) + -idae

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to cast off or become cast off

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