\Pre*sid"i*al\, Presidiary \Pre*sid"i*a*ry\, a. [L.
praesidialis and praesidiarius, fr. praesidium a presiding
over, defense, guard. See {Preside}.]
Of or pertaining to a garrison; having a garrison.
      There are three presidial castles in this city.
                                               --Howell.