Vis·it·or  [Written also visiter.]
  1. One who visits; one who comes or goes to see another, as in civility or friendship.  “This great flood of visitors.”
  2. A superior, or a person lawfully appointed for the purpose, who makes formal visits of inspection to a corporation or an institution.  See Visit, v. t., 2, and Visitation, n., 2.
     The king is the visitor of all lay corporations.   --Blackstone.
  ◄ ►