obsidional [
əb'sɪdɪənl.]
[医] 战壕的
Obsidional \Ob*sid"i*o*nal\, a. [L. obsidionalis, from obsidio a
siege, obsidere to besiege: cf. F. obsidional. See {Obsess}.]
Of or pertaining to a siege.
{Obsidional crown} (Rom. Antiq.), a crown bestowed upon a
general who raised the siege of a beleaguered place, or
upon one who held out against a siege.