Tricentenary
Pronunciation : Tri*cen"te*na*ry
Part of Speech : a.
Etymology : [Pref. tri- + centenary.]
Definition : Defn: Including, or relating to, the interval of three hundred years; tercentenary. -- n.
Defn: A period of three centuries, or three hundred years, also, the three-hundredth anniversary of any event; a tercentenary.
Source : Webster's Unabridged Dictionary, 1913