Latin word obsidium comes from Latin obsideo

Detailed word origin of obsidium

Dictionary entry	Language	Definition
obsideo	Latin (lat)	(transitive) I detain, hold captive. (transitive, military) I besiege; hem in, beset (a city).. I frequent, haunt, inhabit.. I occupy, fill, possess.. I sit, remain, abide, stay.. I watch closely; I am on the lookout for.
obsidium	Latin (lat)	(military) A siege, blockade.