Indonesian Etymology Affixed radikal + -isasi, from English radicalisation (compare to Dutch radicalisatie). Pronunciation IPA(key): /radikalˈɪsasi/ Hyphenation: ra‧di‧kal‧isa‧si Noun radikalisasi (uncountable) (politics) radicalization, radicalisation. Related terms radikalradikalisme Further reading “radikalisasi” in Kamus Besar Bahasa Indonesia, Jakarta: Agency for Language Development and Cultivation – Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia, 2016.Wikiwand - on Seamless Wikipedia browsing. On steroids.