Source : Webster's Revised Unabridged Dictionary (1913)

Gladiatorial \Glad`i*a*to"ri*al\, Gladiatorian
\Glad`i*a*to"ri*an\, a.
   Of or pertaining to gladiators, or to contests or combatants
   in general.

Source : WordNet®

gladiatorial
     adj : of or relating to or resembling gladiators or their combat;
           "gladiatorial combats"