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eutherian

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adjective eu·the·ri·an \yü-ˈthir-ē-ən\

Definition of eutherian

  1. :  of or relating to a major division (Eutheria) of mammals comprising the placental mammals

eutherian

noun


Origin and Etymology of eutherian

ultimately from New Latin eu- + Greek thērion beast — more at treacle


First Known Use: 1880


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to lessen in amount, effect, or force

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