obsignation
noun
ob·sig·na·tion
ˌäb(ˌ)sigˈnāshən
plural -s
: a formal ratification (as by an official seal)
Word History
Etymology
Late Latin obsignation-, obsignatio, from Latin, action of sealing, from obsignatus (past participle of obsignare to mark upon, from ob- + signare to mark) + -ion-, -io -ion