Meaning

noun the calculated use of violence (or the threat of violence) against civilians in order to attain goals that are political or religious or ideological in nature; this is done through intimidation or coe

originEtymology tree Proto-Indo-European *tres- Proto-Indo-European *-yeti Proto-Indo-European *-éyeti Proto-Indo-European *troséyeti Proto-Italic *trozeō Latin terreō Proto-Indo-European *-os Proto-Indo-European *-s Proto-Indo-European *-ōs Proto-Italic *-ōs Latin -or Latin terrorbor. Old French terreur Middle French terreur French terreur Proto-Indo-European *-id- Proto-Indo-European *-yéti…

Etymology from Wiktionary, CC BY-SA 3.0