obsidional

From Latin obsidionalis, from obsidio (“siege, blockade”), from obsidere (“beset, besiege, hem in”).

• IPA^(key): /əbˈsɪdɪənəl/
• Hyphenation: ob‧si‧di‧on‧al

obsidional

1. Pertaining to a siege.
   • 1846–1847, Henry Edward Napier, “Miscellaneous Chapter for the Fifteenth Century”, in Florentine History, from the Earliest Authentic Records to the Accession of Ferdinand the Third, Grand Duke of Tuscany. [...] In Six Volumes, volume IV, London: Edward Moxon, OCLC 70326326, page 3:

     Nor was this strong geographical position her [Florence's] only bulwark; the capital itself in those unskilful days of obsidional tactics was deemed impregnable except through famine.

• obsidional coin