Adjective
Hopewellian (not comparable)
(historical) Relating to the Hopewell tradition, a network of Native American civilisations that engaged in exchange, flourishing during the first half of the first millennium CE.
T.C.Pleger, 2000 Furthermore, some archaeologists find artifactual and structural evidence of casting by Hopewellian and Mississippian peoples to be demonstrated in the archaeological record. Source: Internet