noun Thy·la·co·leo \ˌthīləˈkōlēˌō\

Definition of Thylacoleo

  1. :  a genus (coextensive with the family Thylacoleontidae) of Pleistocene Australian marsupial mammals having a skull about the size of that of a lion, large tusks, and crushing molars

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Origin and Etymology of thylacoleo

New Latin, from Greek thylakos sack + Latin leo lion — more at lion

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to cast off or become cast off

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