interventor
noun
in·ter·ven·tor
-ˈventə(r)
plural -s
1
: a person designated by a church to reconcile parties and unite them in the choice of officers
2
: a temporary administrator (as of a province in Central America or South America) in time of disturbance
Word History
Etymology
Latin, from interventus (past participle of intervenire to intervene) + -or