ˌkäm(ˌ)pərˈgāshən noun
( -s )
Etymology: Late Latin compurgation-, compurgatio, from Latin compurgatus (past participle of compurgare to purify wholly, from com- + purgare to purify) + -ion-, -io -ion — more at purge
: vindication (as from a charge) or testimony or evidence that vindicates ; especially : the clearing of a defendant or accused person by oaths of persons who swear to his veracity or innocence — often used of the mode of vindication of ecclesiastical courts or of the similar procedure in old Germanic courts; compare wager of law