Entry 1 sense Webster, 1913 Hudsonian · Hud·so·ni·an · IPA /hʌdˈsoʊ.ni.ən/ 01 a. Of or pertaining to Hudson's Bay or to the Hudson River; as, the Hudsonian curlew. 1. Of or pertaining to Hudson's Bay or to the Hudson River; as, the Hudsonian curlew.