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From Latin urb(s) (“city”) + -icidal, literally “city-killing”.
Etymology from Wiktionary, CC BY-SA 4.0.
urbicidal
Today it means: Pertaining to or having the nature of urbicide, that being the deliberate “killing” of a city by the razing of distinctive physical manifestations of its urban identity, stifling of the social activity therein, and its general destruction as an edifice of civilisation. Full definition →