B0268400 (bī′ō-rē′jə-nə-lĭz′əm)n. The belief that social organization and environmental policies should be based on bioregions rather than on arbitrary political boundaries.bi′o·re′gion·al·ist n.
bioregionalist
(ˈbaɪəʊˌriːdʒənəlɪst) nsomeone who believes in bioregionalismEncyclopediaSeebioregionalism