Meaning

noun a feature (as a pronunciation or expression or custom) that is characteristic of a particular region

noun a foreign policy that defines the international interests of a country in terms of particular geographic areas

noun loyalty to the interests of a particular region

originEtymology tree English regional Proto-Indo-European *-id- Proto-Indo-European *-yéti Proto-Indo-European *-idyéti Proto-Hellenic *-íďďō Ancient Greek -ῐ́ζω (-ĭ́zō) Proto-Indo-European *-mos Proto-Indo-European *-mós Ancient Greek -μός (-mós) Ancient Greek -ισμός (-ismós)der. English -ism English regionalism From regional + -ism.

Etymology from Wiktionary, CC BY-SA 3.0