Lewis & Short

rĕgĭōnālis, e, adj. [regio], of or belonging to a province or region: concilium, provincial (opp. plenarium), Aug. Bapt. contr. Donat. 7, 53.
Adv.: rĕgĭōnālĭ-ter, by provinces or regions, = regionatim, App. de Mundo, 23, p. 68, 2; Cael. Aur. Acut. 2, 29, 157.