Noun has 1 sense

• eutherian(n = noun.animal) eutherian mammal, placental, placental mammal - mammals having a placenta; all mammals except monotremes and marsupials;

Adjective has 1 sense

• eutherian(a = adj.pert) - of or relating to or belonging to the subclass Eutheria; "eutherian mammals"
Derived form noun eutheria₁