capitolian

from The Century Dictionary.

• Same as Capitoline.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Of or pertaining to the Capitol in Rome.
• adjective (Antiq.) annual games instituted at Rome by Camillus, in honor of Jupiter Capitolinus, on account of the preservation of the Capitol from the Gauls; when reinstituted by Domitian, after a period of neglect, they were held every fifth year.