plural noun Mes·onych·i·dae \ˌme|zōˈnikəˌdē, ˌmē|, |sō-\

Definition of Mesonychidae

  1. :  a family of extinct creodont carnivorous mammals from the Paleocene and Eocene of North America and Europe

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Origin and Etymology of mesonychidae

New Latin, from Mesonych-, Mesonyx, type genus + -idae

Seen and Heard

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a trip made at another's expense

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