T₁R₁I₁E₁N₁N₁I₁U₁M₃

11 points

TRIENNIUM is validvalid

a period of three years [n TRIENNIA, TRIENNIUMS]

117,360 of 196,601 in NWL2023·also valid in CSW24

(Latin) a period of three years [n TRIENNIUMS or TRIENNIA]

255,020 of 280,887 in CSW24·also valid in NWL2023