ˈtrīˌenz, ˈtrēˌān(t)s noun
( plural trien·tes trīˈen.ˌtēz, trēˈen.ˌtās)
Etymology: Latin, third part, triens; akin to Latin tres three — more at three
1. : a bronze coin of ancient Rome equal to 1/3 as
2. : an ancient Byzantine gold coin equal to 1/3 solidus ; also : any of several similar ancient coins (as of Spain)