Of or relating to the besieging of cities or fortresses.
Origin
Mid 18th century; earliest use found in Universal History. From Hellenistic Greek πολιορκητικός of or for besieging from πολιορκητής besieger (from ancient Greek πολιορκεῖν to besiege a city + -τής, suffix forming agent nouns) + -ικός. Compare French poliorcétique.