regional /ˈɹiː.d͡ʒə.nəl/adjective 4noun 1forms 1 adjective4 •Of, or pertaining to, a specific region or district. •Of, or pertaining to, a large geographic region.regional rainfall patterns •(Australia) Of a state or other geographic area, denoting those parts that are not metropolitan but are somewhat densely populated and usually contain a number of significant towns.The wheatlands region stretching across Australia offers a graphic illustration of the processes of social and economic change in rural and regional Australia. — 2005 •Of, or pertaining to, one part of the body. noun1 •An entity or event with scope limited to a single region.In the CPE^([Customer Premises Equipment]) market, all seven regionals are selling several sizes of private branch exchanges (PBX) and key systems for smaller customers. — 1985 formsregionals